CN220922285U

CN220922285U - Electric hydraulic tool

Info

Publication number: CN220922285U
Application number: CN202322535029.7U
Authority: CN
Inventors: 田富刚; 杨其军
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-05-10
Anticipated expiration: 2033-09-14

Abstract

The technical scheme relates to the technical field of hydraulic tools, in particular to an electric hydraulic tool, which comprises: a driving device; the power device is arranged at the front end of the driving device, and the driving device transmits power into the power device through the connecting structure; a working head mounted at the front end of the power unit for performing crimping or shearing work; wherein the connection structure has: an output shaft, the end of which is provided with a torque transmission part in a protruding way; the power device is provided with a positioning groove at the rear end of the eccentric shaft in the power device, and a limiting groove is arranged at the bottom of the positioning groove; when the power device is mounted at the front end of the driving device, the output shaft is inserted into the positioning groove, and the torsion transmission part is inserted into the limiting groove, so that coaxial torsion transmission is realized. The coaxial connection is realized through the matching of the torsion transmission part with the positioning groove and the limiting groove, and the problems of larger volume, high requirement on the firmness of the motor, unstable power transmission, vibration and noise are easy to occur in the existing design are solved.

Description

Electric hydraulic tool

Technical Field

The technical scheme relates to the technical field of hydraulic tools, in particular to an electric hydraulic tool.

Background

Hydraulic tools have a stable and strong output pressure and are therefore widely used in circuit repair work, such as hydraulic shear tools, hydraulic crimping tools for cable joints, and the like.

The technical scheme of the existing hydraulic tool is as disclosed in China patent 202222735482.8, a pinion is arranged on a motor shaft, then a large gear is meshed, the disassembly and the assembly of the hydraulic device are both the separation and the meshing between the large gear and the pinion of a speed reducing mechanism, and the mode has the following defects:

1. The pinion is installed on the motor, in order to cooperate the meshing of gear wheel, the pinion need with the gear wheel non-coaxial line setting, the axis of motor and the axis of gear wheel non-collineation promptly, this just leads to holistic volume relatively great, and when torsion transmission, the fixed fastness requirement to the motor is higher, in case the motor takes place the swing, will take place that power transmission is unstable, have problem such as vibrations and noise.

2. The assembly is inconvenient, because the problem in assembly space, difficult observation when tooth meshing leads to the assembly degree of difficulty big, has reduced assembly efficiency.

Disclosure of Invention

The purpose of this technical scheme is to provide an electric hydraulic tool, through the cooperation of torsion transmission portion with constant head tank and restriction groove, realizes the connection of coaxial line, improves among the current design volume great, to the fastness requirement of motor high, easily takes place the unstable, vibrations and the problem of noise of power transmission.

The technical scheme aims at realizing the following steps:

An electro-hydraulic tool comprising:

A driving device;

The power device is arranged at the front end of the driving device, and the driving device transmits power into the power device through the connecting structure;

A working head mounted at the front end of the power unit for performing crimping or shearing work;

Wherein the connection structure has at least:

an output shaft, the end of which is provided with a torque transmission part in a protruding way;

The power device is provided with a positioning groove at the rear end of the eccentric shaft in the power device, and a limiting groove is arranged at the bottom of the positioning groove;

When the power device is mounted at the front end of the driving device, the output shaft is inserted into the positioning groove, and the torsion transmission part is inserted into the limiting groove, so that coaxial torsion transmission is realized.

Preferably, both sides of the limiting groove penetrate through the side wall of the output shaft.

Preferably, a sealing groove is formed in the rear end face of the working head, and an oil inlet and return port for conducting a hydraulic cavity in the working head is formed in the bottom of the sealing groove;

A sealing ring and a sealing ring are arranged in the sealing groove, and the sealing ring is sleeved outside the sealing ring;

when the working head is mounted at the front end of the power device, the sealing ring and the sealing ring are abutted against the front end face of the power device.

Preferably, the driving device at least includes:

a housing;

a drive mechanism mounted within the housing;

the planetary reduction mechanism is arranged in the shell and is connected with a motor shaft of the driving mechanism;

Wherein the output shaft is arranged on a planet carrier of the planetary reduction mechanism;

the driving mechanism drives the eccentric shaft of the power device to rotate through the planetary reduction mechanism.

Preferably, the front end of the shell is convexly provided with a boss;

A chute is recessed on the lower side surface of the power device, and the side wall of the chute penetrates through the rear end surface of the power device;

The upper end face of the boss is in sliding contact with the bottom face of the chute, and the power device is positioned and installed on the driving device by matching with the connecting structure.

Compared with the prior art, the technical scheme has the advantages that:

According to the technical scheme, the scheme of matching the torsion transmission part with the positioning groove and the limiting groove is adopted to replace the scheme of separating the driving device from the power device by disassembling the speed reducing mechanism in the existing design, the coaxial torsion transmission is realized by the design scheme, the whole volume is reduced, the use is convenient, the production cost is reduced, the concentricity is better after coaxial connection, the torsion transmission is more stable, and the occurrence of noise and vibration is effectively reduced.

Drawings

Fig. 1 is a schematic diagram of the structure of the whole machine of the present utility model.

Fig. 2 is a schematic structural view of the driving device of the present utility model.

Fig. 3 is a schematic view of the power unit of the present utility model.

Fig. 4 is a schematic view of the power plant and working head of the present utility model.

Reference numerals: 1. a driving device; 2. a power device; 3. a working head; 4. an output shaft; 5. a torque transmission section; 7. a positioning groove; 8. a limiting groove; 9. sealing grooves; 10. an oil inlet and return port; 11. a seal ring; 12. a seal ring; 13. a housing; 14. a planetary reduction mechanism; 15. a planet carrier; 16. a boss; 17. a chute; 18. an insertion section; 19. a convex strip; 20. an eccentric shaft; 21. a pump body.

Detailed Description

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, an electro-hydraulic tool includes a driving device 1 for providing driving force, a power device 2 for driving a work head 3 to work, and a work head 3 for performing work;

Wherein the power device 2 is arranged at the front end of the driving device 1, and the driving device 1 transmits power into the power device 2 through a connecting structure;

the working head 3 is installed at the front end of the power device 2 and is used for driving the working head 3 to perform shearing, crimping and other works.

The driving device 1 includes: the planetary reduction mechanism 14 is arranged in the front end of the shell 13, and a gear is arranged on the motor shaft of the motor, and is meshed with the planetary reduction mechanism 14, so that the planetary reduction mechanism 14 and the motor are coaxial.

The power unit 2 mainly comprises a pump body, an oil bag, a plunger mechanism and an eccentric mechanism, and the related structure can be referred to a comparison document 202222735482.8 and is not described.

The eccentric shaft of the eccentric mechanism is arranged in the pump body through a bearing, the rear end of the eccentric shaft is provided with a positioning groove 7, the positioning groove 7 is a circular groove formed by inwards sinking the rear end face of the eccentric shaft, the bottom of the positioning groove 7 is sunk with a limiting groove 8, and the limiting groove 8 is long-strip-shaped in the embodiment and can be of other polygons, so that torque transmission can be realized.

The planetary carrier 15 of the planetary reduction mechanism 14 is provided with an output shaft 4 at the center thereof, and a torque transmission portion 5 is provided at the end of the output shaft 4 in a protruding manner, and the torque transmission portion 5 is designed to fit the shapes of the positioning groove 7 and the restricting groove 8, specifically, has a cylindrical insertion portion 18 and an elongated convex strip portion 19.

During installation, the raised strips are inserted into the limiting grooves 8, meanwhile, the insertion parts 18 are inserted into the positioning grooves 7, concentricity of the eccentric shaft and the output shaft 4 can be guaranteed by matching the insertion parts with the positioning grooves 7, and normal transmission of torsion can be guaranteed by matching the raised strips 19 with the limiting grooves 8.

In order to ensure the strength and temperature of torque transmission, the two ends of the limiting groove 8 penetrate through the side wall of the output shaft 4 and extend to the end face of the output shaft 4 to form two penetrating notches, so that the size of the raised strip can be ensured as much as possible, larger torque can be borne, and the power of the machine is ensured.

According to the technical scheme, the scheme of matching the torque transmission part 5 with the positioning groove 7 and the limiting groove 8 is adopted to replace the scheme that the speed reducing mechanism is disassembled to separate the driving device 1 from the power device 2 in the existing design, the coaxial torque transmission is realized by the design scheme, the whole volume is reduced, the use is convenient, the production cost is reduced, the concentricity is better after coaxial connection, the torque transmission is more stable, and the occurrence of noise and vibration is effectively reduced.

Meanwhile, the planetary reduction mechanism 14 is adopted, so that the motor and the planetary reduction mechanism 14 are also designed coaxially, the overall diameter of the equipment can be reduced as much as possible, the purpose of reducing the volume is achieved, the reasonable design on the structure can be ensured, and the requirement on the fixing strength of the motor is reduced.

In order to ensure more stable torque transmission and reduce the shearing force to the bolts between the power device 2 and the driving device 1, and meanwhile, the convenience of assembly, a boss 16 is convexly arranged at the front end of the shell 13; a chute 17 is recessed on the lower side surface of the power device 2, and the side wall of the chute 17 penetrates through the rear end surface of the power device 2;

During installation, the boss 16 is inserted into the chute 17, then the end faces of the boss 16 are abutted, and under the sum of the chute 17 and the boss 16, the accuracy of butt joint can be guaranteed, so that the assembly is more convenient, the cooperation of the boss 16 and the chute 17 can limit the relative rotation between the power device 2 and the driving device 1, and the fact that excessive shearing force can not be generated on the bolt in the torque transmission process is guaranteed.

In the connection between the power device 2 and the working head 3, a sealing structure is also designed to ensure that hydraulic oil cannot leak, specifically, a sealing groove 9 is formed on the rear end surface of the working head 3, and an oil inlet and return port 10 for conducting a hydraulic cavity in the working head 3 is formed at the bottom of the sealing groove 9;

a sealing ring 11 and a sealing ring 12 are arranged in the sealing groove 9, and the sealing ring 11 is sleeved outside the sealing ring 12;

When the working head 3 is mounted on the front end of the power device 2, the sealing ring 11 and the sealing ring 12 abut against the front end surface of the power device 2.

The sealing ring 11 is made of polytetrafluoroethylene material, the sealing ring 12 is made of rubber, and the sealing ring 12 and the rubber are matched, so that the purpose of protecting the sealing ring 12 can be achieved, and high-pressure sealing can be achieved.

The working head 3 is a shearing working head 3 or a crimping working head 3, and the technology is a conventional technology, and is not described in detail, and reference is made to a comparison document 202222735482.8.

The foregoing shows and describes the basic principles and main features of the present technical solution and the advantages of the present technical solution. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of protection of the technical solution is defined by the appended claims and equivalents thereof.

Claims

1. An electro-hydraulic tool, comprising:

A driving device (1);

The power device (2) is arranged at the front end of the driving device (1), and the driving device (1) transmits power into the power device (2) through a connecting structure;

A working head (3) mounted at the front end of the power unit (2) for performing crimping or shearing operations;

Wherein the connection structure has:

an output shaft (4) with a torque transmission part (5) protruding from the end;

A positioning groove (7) is formed in the rear end of the eccentric shaft in the power device (2), and a limiting groove (8) is formed in the bottom of the positioning groove (7);

When the power device (2) is mounted at the front end of the driving device (1), the output shaft (4) is inserted into the positioning groove (7), and the torsion transmission part (5) is inserted into the limiting groove (8), so that coaxial torsion transmission is realized.

2. The electro-hydraulic tool of claim 1, wherein:

both sides of the limiting groove (8) penetrate through the side wall of the output shaft (4).

3. The electro-hydraulic tool of claim 1, wherein:

A sealing groove (9) is formed in the rear end face of the working head (3), and an oil inlet and return port (10) for conducting a hydraulic cavity in the working head (3) is formed in the bottom of the sealing groove (9);

a sealing ring (11) and a sealing ring (12) are arranged in the sealing groove (9), and the sealing ring (11) is sleeved outside the sealing ring (12);

When the working head (3) is mounted on the front end of the power device (2), the sealing ring (11) and the sealing ring (12) are abutted against the front end face of the power device (2).

4. The electro-hydraulic tool of claim 1, wherein:

The driving device (1) includes:

A housing (13);

A drive mechanism mounted within the housing (13);

A planetary reduction mechanism (14) which is installed in the housing (13) and is connected with a motor shaft of the driving mechanism;

Wherein the output shaft (4) is arranged on a planet carrier (15) of a planetary reduction mechanism (14);

The driving mechanism drives the eccentric shaft of the power device (2) to rotate through the planetary reduction mechanism (14).

5. The electro-hydraulic tool of claim 4, wherein:

a boss (16) is arranged at the front end of the shell (13) in a protruding manner;

A chute (17) is recessed in the lower side surface of the power device (2), and the side wall of the chute (17) penetrates through the rear end surface of the power device (2);

The upper end surface of the boss (16) is in sliding contact with the bottom surface of the chute (17) and is matched with a connecting structure, so that the power device (2) is positioned and installed on the driving device (1).