CN216299138U

CN216299138U - Electric oil pressure pulse type assembling tool

Info

Publication number: CN216299138U
Application number: CN202122703301.9U
Authority: CN
Inventors: 郏玉春; 林学军; 熊春光
Original assignee: Taitian Group Co ltd
Current assignee: Taitian Group Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-15
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses an electric oil pressure pulse type assembling tool, which comprises a motor and an oil pressure pulse assembly provided with a striking shaft; the motor, the oil pressure pulse assembly and the striking shaft are all arranged on the shell; a detector I for monitoring the rotating speed of the output shaft, a detector II for monitoring the striking number of the striking shaft and a controller connected with the detector I, the detector II and the motor are arranged in the shell; the controller automatically shuts down the motor when the pulse frequency reaches a set value; the number of pulses is the number of acceleration fluctuations obtained based on the number of revolutions and strikes. The electric oil pressure pulse type assembling tool drives the oil pressure pulse component to output torque outwards by utilizing the motor; the oil pressure pulse assembly has stable power transmission characteristics, the detector I, the detector II and the controller can accurately monitor the output shaft and the striking shaft and feed back the starting and stopping of the control motor, the fixed torque function is realized on the basis of the oil pressure pulse assembly, the accurate control of output torque is realized, and the working performance is improved.

Description

Electric oil pressure pulse type assembling tool

Technical Field

The utility model relates to the field of electric tools, in particular to an electric oil pressure pulse type assembling tool.

Background

The electric screwdriver is an electric tool which can convert kinetic energy generated by the rotation of an electric motor into deformation energy of a thread connecting piece in the outside, is used for screwing and disassembling the thread connecting piece, and can be widely applied to industries such as household appliances, automobiles, motorcycles and the like.

In order to ensure the assembly quality of the product, an operator often needs to enable the electric screwdriver to complete the installation of the internal thread connecting piece of the product with a specific torque, in other words, the electric screwdriver with the torque fixing function can ensure the installation effect of the internal thread connecting piece of the product, and further ensure the assembly quality of the product.

In the existing common electric screw drivers, although some electric screw drivers can realize fixed torque, the torque transmission precision and the detection precision are relatively low, so that the fixed torque control effect of the electric screw drivers is common, and the torque actually processed by a tool on a threaded coupling part has a relatively large error with the expected torque of an operator, which not only affects the assembly quality of a product and the threaded coupling part thereof, but also is not beneficial to the service life and the operation safety of the electric screw drivers.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric oil pressure pulse type assembling tool which can realize fixed torque with high output torque precision.

In order to achieve the above object, the present invention provides an electric oil pressure pulse type assembling tool, comprising a motor and an oil pressure pulse assembly provided with a striking shaft; the motor, the oil pressure pulse assembly and the striking shaft are all arranged in the shell; still be equipped with in the casing:

a detector I adjacent to the output shaft of the motor for monitoring the rotating speed of the output shaft;

a detector II adjacent to the striking shaft for monitoring the number of strikes of the striking shaft;

the controller is connected with the detector I, the detector II and the motor; the controller automatically shuts down the motor when the pulse frequency reaches a set value; the number of pulses is the number of acceleration fluctuations obtained based on the rotational speed and the number of hits.

Preferably, the detector I comprises a magnetic inductor and an encoder.

Preferably, the oil pulse assembly includes an impact bracket coupled to the output shaft; a connector is arranged between the impact frame and the output shaft; the impact frame and the connector are both in a shaft sleeve shape;

the connector comprises a first joint and a second joint which are respectively positioned at two axial ends; the first joint is clamped and tightly matched with the output shaft; the second joint is clamped and tightly matched with the impact frame.

Preferably, a threaded mating surface is provided between the first connector and the output shaft.

Preferably, the output shaft comprises a shaft section I and a shaft section II; the shaft section I is connected with a driving piece in the motor through the shaft section II; the diameter of the shaft section I is smaller than that of the shaft section II; the thread matching surface is arranged between the first joint and the shaft section II; the shaft section I is matched with a mounting hole shaft hole in the connector.

Preferably, the second joint comprises a sleeve and a plurality of locking screws annularly distributed on the peripheral side of the sleeve; and any locking screw penetrates through the sleeve along the radial direction of the sleeve and locks the sleeve and the impact frame.

Preferably, the impact frame comprises a working section and a connecting section, wherein a sealed oil cavity is formed in the working section, and the periphery of the connecting section is provided with a plurality of positioning blind holes; the sleeve is clamped in the connecting section; all the locking screws penetrate into the positioning blind holes in a one-to-one correspondence mode.

Preferably, the outer diameter of the connecting section is larger than the outer diameter of the first joint; the outer diameter of the working section is equal to the outer diameter of the sleeve.

Preferably, the axial end face of the impact frame is provided with a central blind hole; the shaft end of the output shaft is inserted into the central blind hole, and the shaft hole is matched with the central blind hole; the impact frame, the central blind hole, the connector and the output shaft are all coaxially distributed.

Preferably, the oil pulse assembly includes an impact frame, a cam shaft, and the striking shaft; the tail part of the striking shaft and the cam shaft are coaxially arranged in a sealed oil cavity in the impact frame; an oil pressure moving block moving along the radial direction of the camshaft is arranged in the sealed oil cavity; the oil hydraulic block limits and forms two pulse oil cavities between the sealed oil cavity and the tail part of the striking shaft; the two pulse oil cavities are positioned on two sides of any oil hydraulic movable block in the moving direction; the two pulse oil cavities are communicated through overflow holes; the impact frame periodically extrudes the oil hydraulic block to drive oil to alternately flow between the two pulse oil cavities when rotating, and then drives the striking shaft to output pulse torque outwards.

Compared with the prior art, the electric oil pressure pulse type assembling tool provided by the utility model comprises a motor and an oil pressure pulse assembly provided with a striking shaft; the motor, the oil pressure pulse assembly and the striking shaft are all arranged on the shell; still be equipped with in the casing:

a detector I which is close to the output shaft of the motor and is used for monitoring the rotating speed of the output shaft;

the controller is connected with the detector I, the detector II and the motor; the controller automatically shuts down the motor when the pulse frequency reaches a set value; the number of pulses is the number of acceleration fluctuations obtained based on the number of revolutions and strikes.

The electric oil pressure pulse type assembling tool drives the oil pressure pulse assembly to output torque outwards by utilizing the motor, so that a workpiece is screwed. On the basis that the oil pressure pulse assembly has good stability, the electric oil pressure pulse type assembling tool realizes the functions of fixed torque and automatic power off by monitoring the starting and stopping of the output shaft and the striking shaft by feedback control of the motor, thereby more accurately controlling the output torque and improving the working performance of the electric oil pressure pulse type assembling tool. The specific structure and function of the oil pulse assembly can refer to the prior art.

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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electric oil pressure pulse type assembling tool according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of an electric oleo pulse type setting tool of an embodiment of the present invention at the oleo assembly and at the connector;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 5 is a schematic structural diagram of an electric oil pressure pulse type assembling tool provided by an embodiment of the utility model at a PCB.

The device comprises a motor 1, an output shaft 11, an oil pressure pulse component 3, an impact frame 31, a working section 310, a connecting section 311, a cam shaft 32, a striking shaft 33, an oil pressure moving block 34, a shell 4, a connector 5, a first connector 51, a second connector 52, a sleeve 521, a locking screw 522, a lighting lamp 6, a touch switch 7 for forward and reverse rotation, a switch 8, a battery 9 and a PCB 10.

Detailed Description

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

In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of an electric hydraulic pulse type assembling tool according to an embodiment of the present invention; FIG. 2 is a schematic view of a portion of an electric oleo pulse type setting tool of an embodiment of the present invention at the oleo assembly and at the connector; FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1;

The utility model provides an electric oil pressure pulse type assembling tool, which comprises a motor 1, an oil pressure pulse assembly 3 and a shell 4; the oil pulse assembly 3 includes a striking shaft 33, the striking shaft 33 being used for connecting a workpiece such as a threaded coupling from the outside; the motor 1 has an output shaft 11, and the output shaft 11 is connected to the oil pulse unit 3 for supplying power to the oil pulse unit 3.

In the electric oil pressure pulse type assembling tool, a motor 1 is arranged in a shell 4; the striking shaft 33 includes a striking shaft head for connecting a workpiece, and the rest of the oil pulse unit 3 except the striking shaft head is disposed in the housing 4. In addition, a detector I for detecting the rotation speed of the output shaft 11, a detector II for monitoring the number of strikes of the striking shaft 33, and a controller connected to the detector I, the detector II, and the motor 1 are provided in the housing 4, and the controller automatically turns off the motor 1 when the number of pulses reaches a set value.

The number of pulses described above refers to the number of acceleration fluctuations analyzed based on the number of hits acquired by the detector I and the number of hits acquired by the detector II. In other words, the electric oil pressure pulse type assembling tool can calibrate the corresponding relationship between the output torque of the striking shaft 33 and the preset torque value based on the acceleration change condition of the striking shaft 33, thereby determining whether the output torque of the striking shaft 33 reaches the preset torque value.

The electric oil pressure pulse type assembling tool drives the oil pressure pulse component 3 to output torque outwards by using the motor 1, so as to screw a workpiece. On the basis that oil pulse subassembly 3 has good stability, this electronic oil pressure pulsed erecting tool realizes deciding the turn round and auto-power-off function through monitoring output shaft 11 and striking axle 33 and come the start-stop of feedback control motor 1 to control output torque more accurately, improve this electronic oil pressure pulsed erecting tool's working property. The specific structure and function of the oil pulse assembly 3 can refer to the prior art.

The electric oil pressure pulse type assembling tool provided by the utility model is further described below with reference to the accompanying drawings and embodiments.

In the electric oil pressure pulse type assembling tool provided by the utility model, the detector I and the detector II can adopt a magnetic inductor and an encoder to realize respective monitoring functions. Taking the example of the detector I, the detector I includes a magnetic sensor and an encoder that processes signals acquired by the magnetic sensor and provides an "ABZ" signal to a controller, such as the PCB10, that can be used to describe the rotational state of the output shaft 11.

Based on the rotation speed of the output shaft 11 and the number of strikes of the striking shaft 33 provided by the detectors I and II, the controller can analyze and calculate acceleration data of the oil pulse package 3 and the number of acceleration fluctuations in the acceleration data.

Further, the oil pulse unit 3 includes an impact frame 31; the electric oil pressure pulse type assembling tool further includes a connector 5 provided between the impact frame 31 and the output shaft 11.

The impact bracket 31 is fitted to the outer periphery of the remaining parts of the oil pulse unit 3 so as to integrate all the parts of the oil pulse unit 3 into one unit. Of course, in the case of the striking shaft 33 of the hydraulic pulse unit 3, the impact frame 31 is provided on the outer periphery of the striking shaft 33 except for the head of the striking shaft, for example, if the striking shaft 33 includes the head of the striking shaft, the middle of the striking shaft, and the tail of the striking shaft, the impact frame 31 is provided on the outer periphery of the middle of the striking shaft and the tail of the striking shaft.

Both the impact frame 31 and the connector 5 are sleeve-shaped. The connector 5 includes a first joint 51 and a second joint 52 at both ends in the axial direction, respectively; the first connector 51 is sleeved on the output shaft 11 and is tightly matched and fixed with the output shaft 11; the second connector 52 is inserted into the impact frame 31 and is tightly fitted and fixed with the impact frame 31. When the electric oil pressure pulse type assembling tool is used, the output shaft 11 of the motor 1 drives the impact frame 31 to rotate through the connector 5, and torque is transmitted to the oil pressure pulse assembly 3.

In order to improve the assembling accuracy of the output shaft 11 and the impact frame 31, a threaded matching surface is provided between the first connector 51 and the output shaft 11, for example, the peripheral side of the output shaft 11 is provided with an external thread, the first connector 51 is a threaded connector with an internal thread, the first connector 51 is sleeved and screwed on the shaft end of the output shaft 11, the first connector 51 and the output shaft 11 are ensured to be tightly connected, and the relative movement of the first connector 51 and the output shaft 11 in the axial direction and the radial direction is better restrained.

In addition to the output shaft 11 and the first joint 51 being screw-fitted, the output shaft 11 is fitted to a mounting-hole shaft hole in the connector 5. More specifically, the connector 5 includes a first joint 51, a second joint 52, and a mounting hole therebetween, the mounting hole communicating with the first joint 51; output shaft 11 includes relatively fixed shaft section I and shaft section II, and shaft section I passes through shaft section II and connects the driving piece in motor 1, in other words, shaft section II is closer to motor 1 than shaft section I, when first joint 51 cover was established and is twisted soon in shaft section II, shaft section I wears to locate in the mounting hole, realizes shaft section I and this two shaft hole cooperation of mounting hole, wherein, aforementioned shaft section I and shaft section II can coaxial distribution, shaft section I and mounting hole can interference fit.

As for the second joint 52 of the connector 5, it may include a sleeve 521 for housing the impact frame 31 and a plurality of locking screws 522 annularly arranged on the peripheral side of the sleeve 521; any one of the locking screws 522 is inserted through the impact frame 31 along the radial direction of the sleeve 521, and all the locking screws 522 are surrounded on the sleeve 521 and the impact frame 31 which are sleeved with each other. The locking screw 522 can limit the relative position of the sleeve 521 and the impact frame 31 in the axial direction, and can facilitate the reduction of the assembly clearance of the sleeve 521 and the impact frame 31 in the radial direction.

The above-mentioned assembling relationship between the second joint 52 and the impact frame 31 realizes the in-line installation of the impact frame 31 in the second joint 52, which is beneficial to reducing the bounce between the connector 5 and the impact frame 31 and ensuring the stable power transmission between the connector 5 and the impact frame 31.

Considering that the oil pulse assembly 3 needs to provide a cavity structure for oil therein to perform a sealing operation, the impact frame 31 may include a working section 310 having a sealed oil chamber therein and a connecting section 311 having a plurality of blind positioning holes on the periphery. In the oil pulse component 3, a sealed oil cavity is used for accommodating oil and a transmission structure related to the movement of the oil, so that a sealed working environment can be provided for the oil; the positioning blind hole is used for connecting the locking screw 522, and the positioning installation of the locking screw 522 between the sleeve 521 and the impact frame 31 is satisfied. It can be seen that, in this embodiment, not only the sealed oil chamber and the positioning blind hole are not communicated with each other, but also the working section 310 disposed in the sealed oil chamber and the connecting section 311 disposed in the positioning blind hole belong to different parts of the impact frame 31, so that the shape and structure of the sealed oil chamber and the hole depth of the positioning blind hole along the radial direction of the impact frame 31 are not greatly affected by each other, which not only can ensure the sealed oil chamber and its operation characteristics, but also can ensure the connection performance of the second joint 52 and the connecting section 311.

Specifically, in the above embodiment, the outer diameter of the connecting section 311 is larger than the outer diameter of the first joint 51; the outer diameter of the working section 310 is equal to the outer diameter of the sleeve 521.

The connecting section 311 and the sleeve 521 are sleeved with each other, specifically, the sleeve 521 is sleeved on the connecting section 311, and based on the assembling relationship between the sleeve 521 and the connecting section 311, the outer diameter of the sleeve 521 is inevitably larger than the outer diameter of the connecting section 311, that is, larger than the outer diameter of the first joint 51. At the same time, the outer diameter of the sleeve 521 is equal to the maximum radial dimension of the connecting section 311 and the sleeve 521, which are sleeved with each other, and the maximum radial dimension is equal to the outer diameter of the workpiece section, which means that the impact frame 31 and the connector 5 can be assembled into a combined structure with a relatively regular appearance, which is beneficial for the motor 1 to drive the housing 4 of the impact frame 31 to rotate through the connector 5.

Further, in the electric oil pressure pulse type assembling tool, the axial end face of the impact frame 31 is provided with a central blind hole. When the motor 1, the connector 5 and the impact frame 31 are assembled, the motor 1 is fixedly sleeved with the first joint 51 of the connector 5 through the peripheral side surface of the output shaft 11, and is inserted into the central blind hole of the impact frame 31 through the shaft end of the output shaft 11.

The fit relationship between the shaft end of the output shaft 11 and the central blind hole of the impact frame 31 includes but is not limited to clearance fit and interference fit. The installation of the connector 5 and the impact frame 31 is simplified by positioning the shaft end of the output shaft 11 with the center blind hole, for example, after the shaft end of the output shaft 11 is inserted into the center blind hole, a plurality of locking screws 522 can be easily inserted between the sleeve 521 and the impact frame 31.

Preferably, in the above embodiment, the output shaft 11, the connector 5, the impactor and the blind central hole thereof may be coaxially distributed. The assembly relationship between the output shaft 11 and the central blind hole can simplify the positioning and installation of the locking screw 522, and is also beneficial to ensuring the coaxiality of the motor 1 and the impact frame 31 in the assembly link and improving the installation quality of the motor 1 and the impact frame 31 in the shell 4.

In the above embodiment, the electric oil pressure pulse type assembling tool improves the assembling accuracy and the assembling strength of the motor 1 and the oil pressure pulse component 3 by using the connector 5 additionally arranged between the motor 1 and the impact frame 31, avoids the vibration when the motor 1 and the oil pressure pulse component 3 are directly connected, is beneficial to safely, stably and accurately transmitting the torque from the motor 1 to the oil pressure pulse component 3, and is also beneficial to improving the detection accuracy of the detector I and the detector II; based on the shape structure of the connector 5, the electric oil pressure pulse type assembling tool also adjusts the connection relation between the motor 1 and the impact frame 31, so that the assembling effect of the motor 1 and the oil pressure pulse assembly 3 can be further improved, the assembling process of the electric oil pressure pulse type assembling tool is facilitated to be simplified, and the process guarantee is provided for improving the assembling quality of the motor 1 and the oil pressure pulse assembly 3.

An embodiment of the oil pulse unit 3 used in the present invention is provided below.

The oil pulse assembly 3 comprises an impact frame 31, a cam shaft 32, a striking shaft 33 and an oil motion block 34; a sealed oil chamber is arranged inside the impact frame 31; the striking shaft 33 includes a striking shaft head and a striking shaft tail at both ends in the axial direction; the camshaft 32, the oil pressure dynamic block 34 and the striking shaft tail are all installed in a sealed oil cavity of the striking frame 31, and the striking shaft tail, the camshaft 32 and the striking frame 31 provided with the sealed oil cavity are coaxially distributed.

In the above oil pulse assembly 3, the oil hydraulic block 34 moves in the radial direction of the camshaft 32, including closer to the camshaft 32 and farther from the camshaft 32 in the radial direction of the camshaft 32. The sealed oil chamber is defined by the striking shaft tail and oil plunger 34 as two pulse chambers. The two pulse oil cavities are communicated through overflow holes; the two pulse oil chambers are located on both sides of any one of the oil hydraulic blocks 34 in the moving direction, and therefore, the alternate flow of the oil in the two pulse oil chambers has a specific correspondence with the reciprocating movement of the oil hydraulic blocks 34 in the radial direction of the camshaft 32. When the impact frame 31 is driven by the motor 1 to rotate, the impact frame 31 periodically extrudes the oil pressure dynamic block 34, so that the oil pressure dynamic block 34 moves along the radial direction of the cam shaft 32, and simultaneously oil liquid alternately flows in the two pulse oil cavities, and the oil liquid acts on the tail part of the striking shaft to drive the striking shaft 33 to rotate, so that the striking shaft 33 outputs pulse torque outwards.

The oil hydraulic block 34 may include a sleeve 341 and a pulley 342; the sliding sleeve 341 is inserted and slidably fitted into the sliding cavity of the camshaft 32, one side of the pulley 342 abuts against the sliding sleeve 341, and the other end is used to periodically contact the rotating impact frame 31.

Compared with a conventional mechanical transmission structure, the oil pressure pulse assembly 3 is high in sealing performance and good in stability, can guarantee working sensitivity and precision in long-term operation, and is favorable for guaranteeing the output torque precision of the electric oil pressure pulse type assembling tool by combining the detector I, the controller and the connector 5.

In addition, the electric oil pressure pulse type assembling tool provided by the utility model also comprises a switch 8, an illuminating lamp 6, an indicating lamp and a positive and negative rotation touch switch 7; the switch 8 and the positive and negative rotation touch switch 7 are arranged on the surface of the shell 4; the illuminating lamp 6 is arranged at the front end of the electric oil pressure pulse type assembling tool, so that the electric oil pressure pulse type assembling tool is convenient to use in an environment with insufficient light; the indicator lights may include an indicator light I, an indicator light II, an indicator light III and an indicator light IV, the four indicator lights are respectively used for identifying different process signals of the electric hydraulic pulse type assembling tool, for example, the indicator light I is turned on when the output torque of the electric hydraulic pulse type assembling tool reaches a set value, the indicator light II is turned on when the output torque of the electric hydraulic pulse type assembling tool does not reach the set value, the indicator light III is turned on when the battery 9 of the electric hydraulic pulse type assembling tool is dead, and the indicator light IV is turned on when the striking shaft 33 of the electric hydraulic pulse type assembling tool is reversed. The four indicator lights can be distinguished by color or by location and indicia. Illustratively, pilot lamp I is green LED lamp, and pilot lamp II is red LED lamp, and pilot lamp III is yellow LED lamp, and pilot lamp IV is blue LED lamp.

The electric oil pressure pulse type assembling tool provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. An electric oil pressure pulse type assembling tool is characterized by comprising a motor (1) and an oil pressure pulse assembly (3) provided with a striking shaft (33); the motor (1), the oil pulse assembly (3) and the striking shaft (33) are all arranged on the shell (4); still be equipped with in casing (4):

a detector I for monitoring the rotational speed of the output shaft (11) in close proximity to the output shaft (11) of the motor (1);

a detector II adjacent to the striking shaft (33) for monitoring the number of strikes of the striking shaft (33);

a controller connected to the detector I, the detector II and the motor (1); the controller automatically shuts down the motor (1) when the pulse frequency reaches a set value; the number of pulses is the number of acceleration fluctuations obtained based on the rotational speed and the number of hits.

2. The electro-hydraulic pulsed assembly tool of claim 1, wherein the detector I comprises a magnetic inductor and an encoder.

3. An electric oil-pressure pulse type assembling tool according to claim 1, wherein the oil-pressure pulse assembly (3) includes an impact carrier (31) connected to the output shaft (11); a connector (5) is arranged between the impact frame (31) and the output shaft (11); the impact frame (31) and the connector (5) are both in a shaft sleeve shape;

the connector (5) comprises a first joint (51) and a second joint (52) which are respectively positioned at two axial ends; the first connector (51) is clamped and tightly matched with the output shaft (11); the second connector (52) is clamped and tightly matched with the impact frame (31).

4. Electric oil-pressure pulse type assembling tool according to claim 3, wherein a screw-threaded mating surface is provided between the first joint (51) and the output shaft (11).

5. The electric oil-pressure pulse type assembling tool according to claim 4, wherein the output shaft (11) includes a shaft section I (111) and a shaft section II (112); the shaft section I (111) is connected with a driving part in the motor (1) through the shaft section II (112); the diameter of the shaft section I (111) is smaller than that of the shaft section II (112); the thread matching surface is arranged between the first connector (51) and the shaft section II (112); the shaft section I (111) is matched with a mounting hole shaft hole in the connector (5).

6. The electric oil-pressure pulse type assembling tool according to any one of claims 3 to 5, wherein the second joint (52) includes a sleeve (521) and a plurality of locking screws (522) arranged around a peripheral side of the sleeve (521); any locking screw (522) penetrates through the sleeve (521) along the radial direction of the sleeve (521) and locks the sleeve (521) and the impact frame (31).

7. An electric oil pressure pulse type assembling tool according to claim 6, wherein the impact frame (31) comprises a working section (310) provided with a sealed oil chamber inside and a connecting section (311) provided with a plurality of positioning blind holes on the periphery side; the sleeve (521) is sleeved on the connecting section (311); all the locking screws (522) penetrate into the positioning blind holes in a one-to-one correspondence mode.

8. Electric oil-pressure pulse type assembling tool according to claim 7, characterized in that an outer diameter of the connecting section (311) is larger than an outer diameter of the first joint (51); the outer diameter of the working section (310) is equal to the outer diameter of the sleeve (521).

9. Electric oil-pressure pulse type assembling tool according to claim 8, characterized in that an axial end face of the impact frame (31) is provided with a center blind hole (312); the shaft end of the output shaft (11) is inserted into the central blind hole (312) and is matched with the shaft hole; the impact frame (31), the central blind hole (312), the connector (5) and the output shaft (11) are all coaxially distributed.

10. An electric oil-pressure pulse type assembling tool according to claim 1, characterized in that the oil-pressure pulse assembly (3) includes an impact frame (31), a cam shaft (32), and the striking shaft (33); the tail part of the striking shaft (33) and the cam shaft (32) are coaxially arranged in a sealing oil cavity in the impact frame (31); an oil hydraulic moving block (34) moving along the radial direction of the camshaft (32) is arranged in the sealed oil cavity; the oil hydraulic block (34) defines two pulse oil chambers between the sealed oil chamber and the tail part of the striking shaft; the two pulse oil cavities are positioned on two sides of any one oil hydraulic block (34) in the moving direction; the two pulse oil cavities are communicated through overflow holes; the impact frame (31) periodically extrudes the oil hydraulic block (34) when rotating so as to drive oil to alternately flow between the two pulse oil chambers, and further drive the impact shaft (33) to output pulse torque outwards.