CN221282909U

CN221282909U - Oil press

Info

Publication number: CN221282909U
Application number: CN202323252888.1U
Authority: CN
Inventors: 程泽亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-11-30
Filing date: 2023-11-30
Publication date: 2024-07-05
Anticipated expiration: 2033-11-30

Abstract

The application provides an oil press, which comprises an oil press main body and a three-phase asynchronous motor, wherein the three-phase asynchronous motor comprises a stator core and a three-phase stator winding, the stator core is a hollow body formed by 12M stator splicing block assemblies in a surrounding and splicing mode, M is a natural number greater than or equal to 1, and each stator splicing block assembly comprises a stator splicing block, a winding branch wound on the stator splicing block and an insulating piece arranged between the stator splicing block and the winding branch. In the application, the stator core is formed by splicing the stator splicing blocks, so that the stator winding can be wound on the stator splicing blocks first and then spliced, the winding of the independent stator splicing blocks is more convenient, the efficiency is higher, the splicing of the stator splicing blocks is simple, the whole assembly efficiency is improved, and the labor cost is reduced.

Description

Oil press

Technical Field

The application belongs to the technical field of mechanical equipment, and particularly relates to an oil press.

Background

The motors commonly used in the market at present mainly comprise a servo motor and a three-phase asynchronous motor. Because of the many differences in structure, working principle and performance of these two motors, they are often used in different working scenarios. The servo motor has the advantages of high displacement precision, good positioning precision, wide speed regulation range and good system reliability, and can realize more accurate closed-loop control due to the encoder, which cannot be achieved by the three-phase asynchronous motor. Therefore, the price of the servo motor is multiple times of that of a common three-phase asynchronous motor. But the three-phase asynchronous motor also has the advantages of good running performance, simple structure, light weight and low price.

Currently, in the oil press industry, a three-phase asynchronous motor is generally adopted for driving, and the three-phase asynchronous motor is of a conventional structure, and a stator core of the three-phase asynchronous motor is generally formed by laminating a plurality of stator punching sheets 10' as shown in fig. 1. As shown in fig. 1, the stator punching sheet 10 'is integrally formed into a hollow full circle during punching, and a plurality of notches 11' are uniformly distributed along the inner circumference thereof. When a plurality of identical stator laminations 10' are laminated, the notches 11' on the plurality of stator laminations 10' are aligned and laminated to form the stator slots. Adopt this kind of stator core structure, stator core is a holistic hollow cylinder, and the stator groove is located inside, and the wire winding is inconvenient, and when stator groove distribution is denser, and the stator groove opening is littleer, brings inconvenience for the wire winding more, generally needs to adopt the manual work to wire winding, and wire winding inefficiency.

Disclosure of utility model

The embodiment of the application aims to provide an oil press, which aims to solve the technical problems that an integrated stator core in a three-phase asynchronous motor in the oil press is not easy to wind and the winding efficiency is low in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: the utility model provides an oil press, includes oil press main part and three-phase asynchronous motor, three-phase asynchronous motor includes stator core and three-phase stator winding, stator core is the cavity body that is enclosed to close the concatenation by 12M stator piece subassembly and forms, and M is greater than or equal to 1's natural number, every stator piece subassembly includes stator piece, winding on the stator piece branch road, and locates the stator piece with insulating part between the winding branch road.

Further, two adjacent stator segments are welded and fixed.

Further, two side walls of each stator splicing block are respectively provided with a clamping rib and a clamping groove along the length direction, and two adjacent stator splicing blocks are clamped and fixed through the clamping ribs and the clamping grooves.

Further, the stator piece includes interior piece, outer piece, and fixed connection that coaxial setting in piece with spool between the piece is pieced together to outer, interior piece, outer piece and spool enclose the transversal "worker" font of personally submitting after the piece, adjacent two interior piece, outer piece and the spool of stator piece enclose and form the stator groove, joint muscle and draw-in groove are located respectively on the both sides wall of piece.

Further, the insulating piece comprises two end covers respectively arranged at two ends of the stator splicing block, and two insulating papers respectively arranged at two sides of the stator splicing block.

Further, the end cover comprises a first insulating block with a U-shaped cross section and covered at the end part of the winding column, and two second insulating blocks respectively positioned at two ends of the first insulating block and respectively attached to the outer splicing block and the inner splicing block.

Further, the cross section of the insulating paper is also U-shaped, and the insulating paper comprises a first part and two second parts, wherein the first part is arranged along the side wall of the winding column, the two second parts are respectively arranged along the inner walls of the outer splicing block and the inner splicing block, and the two second parts are folded inwards to be wrapped with the first part to wrap the stator winding.

Further, the insulating member includes both end caps inserted opposite to each other in the length direction of the stator segment, and the winding branch is wound around the both end caps.

Further, each end cover comprises a first insulating plate with a U-shaped cross section and a cover arranged at the end part of the winding column, and two second insulating plates positioned at two ends of the first insulating plate and respectively attached to the outer splicing block and the inner splicing block, wherein the two first insulating plates extend inwards along the winding column and are abutted, and the four second insulating plates of the two end covers extend inwards along the outer splicing block and are abutted.

Further, the insulating member includes an insulating coating applied to the inner surfaces of the outer and inner segments, and the outer surface of the winding post.

According to the application, the stator core is formed by splicing the stator splicing blocks, so that the stator winding can be wound on the stator splicing blocks first and then spliced, the winding of the independent stator splicing blocks is more convenient, the efficiency is higher, the splicing of the stator splicing blocks is simple, the whole assembly efficiency is improved, and the labor cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a stator lamination of a three-phase asynchronous motor in the prior art;

fig. 2 is a schematic diagram of a stator structure of a three-phase asynchronous motor according to an embodiment of the present application;

FIG. 3 is a schematic view of a stator segment assembly according to an embodiment of the present application;

FIG. 4 is a schematic view of a stator segment in an embodiment of the application;

FIG. 5 is an exploded view of an insulator according to an embodiment of the present application;

wherein, each reference sign in the figure:

10' -stator punching; 11' -notch;

10-stator core; 11-stator tile assembly; 111-stator segments; 112-winding branches; 113-an insulator; 114-clamping ribs; 115-a clamping groove; 116-inner tiles; 117-outer tiles; 118-winding posts; 119-stator slots; 120-end caps; 121-insulating paper; 122-a first insulating block; 123-a second insulating block; 124-first part; 125-a second part; 20-stator windings.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The oil press provided by the embodiment of the application comprises an oil press main body and a three-phase asynchronous motor. The hydraulic press is a device which uses special hydraulic oil as a working medium, uses a three-phase asynchronous motor as a power source, uses the acting force of the three-phase asynchronous motor to enable the hydraulic oil to enter an oil cylinder/piston through a hydraulic pipeline, and enables the hydraulic oil to circulate in an oil tank through a one-way valve to enable the oil cylinder/piston to do work circularly. Referring to fig. 2 and 3, the three-phase asynchronous motor is used as a power source, and includes a stator core 10 and three-phase stator windings 20, wherein the three-phase stator windings 20 are respectively U-phase, V-phase and W-phase, each phase has independent voltage and current waveforms, and the phase difference between the three-phase stator windings 20 is 120 degrees.

The stator core 10 is a hollow body formed by surrounding and splicing 12M stator splicing block assemblies 11, and M is a natural number greater than or equal to 1. Each stator segment assembly 11 includes a stator segment 111, winding legs 112 wound around the stator segment 111, and an insulator 113 disposed between the stator segment 111 and the winding legs 112.

In the application, the stator core 10 is formed by splicing the stator splicing block assemblies 11, so that winding branches 112 can be wound on the stator splicing blocks 111 first and then spliced, thus, the winding of the independent stator splicing blocks 111 is more convenient and the efficiency is higher, the splicing of the stator splicing blocks 111 is simple, the whole assembly efficiency is improved, and the labor cost is reduced.

In this embodiment, as shown in fig. 4, each two adjacent stator segments 111 are fixed by a clamping manner, so that the installation is convenient and the disassembly is convenient. Specifically, two side walls of the stator assembly 111 are respectively provided with a clamping rib 114 and a clamping groove 115 along the length direction, and each two adjacent stator assemblies 111 are clamped and fixed with the clamping groove 115 through the clamping ribs 114. Of course, alternatively, adjacent stator segments 111 may be secured by welding.

Specifically, referring to fig. 4, the stator segment 111 includes an inner segment 116, an outer segment 117, and a winding post 118 fixedly connected between the inner segment 116 and the outer segment 117, the inner segment 116, the outer segment 117, and the winding post 118 are integrally formed, the cross sections of the inner segment 116, the outer segment 117, and the winding post 118 after being enclosed are shaped like an "i", the inner segment 116, the outer segment 117, and the winding post 118 of two adjacent stator segments 111 enclose to form a stator slot 119, and the ribs 114 and the slots 115 are respectively disposed on two sidewalls of the outer segment 117. The cross section of the clamping rib 114 is matched with the cross section of the clamping groove 115, and the clamping rib 114 can be round, square, triangular or the like, and is installed in the length direction by one end face of the clamping groove 115 during assembly, and a male-female engagement structure is arranged between the clamping rib 114 and the clamping groove, so that the clamping connection can be realized rapidly and stably, and the clamping rib is not easy to fall off.

Referring to fig. 3, 4 and 5, in the present embodiment, the insulating member 113 includes two end caps 120 respectively provided at both ends of the stator segment 111, and two insulating papers 121 respectively provided at both sides of the stator segment. Each end cap 120 is used to isolate the winding leg 112 from the stator segment 111, i.e., from the winding post 118, the inner segment 116 and the outer segment 117, while the insulating paper 121 is used to encase the winding leg 112 within the stator slot 119. In this embodiment, the end cover structure is adopted for insulation and isolation at two ends of the stator core 10, and the insulation paper 121 is adopted for insulation and isolation in the middle of the stator core 10, so that the cost of the insulation paper 121 is low, and the cost is effectively reduced.

Specifically, the end cover 120 includes a first insulating block 122 located in the middle and two second insulating blocks 123 located at two ends of the first insulating block 122, where the first insulating block 122 is in a "U" shape and covers the end of the winding post 118, and the two second insulating blocks 123 are respectively abutted against the inner walls of the outer and inner tiles 117 and 116.

The insulating paper 121 is also "U" -shaped in cross section and comprises a first portion 124 which abuts along the side wall of the winding post 118 and two second portions 125 which are respectively provided along the inner walls of the outer segment 117 and the inner segment 116, the two second portions 125 being folded inwardly to enclose the winding branch 112 together with the first portion 124. When the stator assembly 11 is assembled, the end caps 120 are respectively installed at two ends of the stator assembly 111, the insulating paper 121 is placed at two sides of the stator assembly 111, the winding is performed along the winding posts 118, the winding branch 112 is actually wound on the two end caps 120 and the first part 124 of the insulating paper 121, and after the winding is completed, the two second parts 125 of the insulating paper 121 are folded in half to wrap the winding branch 112.

Alternatively, in other embodiments, the insulator may take other forms (not shown), such as an insulator comprising two end caps inserted opposite each other along the length of the stator segment, and the stator windings wound around the two end caps. This end cap differs from the end cap of fig. 5 in that the longitudinal length of the end cap is longer. Specifically, each end cover comprises a first insulating plate and four insulating plates, wherein the cross section of the first insulating plate is U-shaped, and the first insulating plate and the four insulating plates are covered at the end parts of the winding posts. The four second insulating plates are arranged at two ends of the first insulating plate in pairs, and the two insulating plates at the same end are oppositely arranged and respectively attached to the inner walls of the outer splicing block and the inner splicing block. The two first insulating plates extend inwards along the winding posts 118 and are abutted, the first insulating plates cover the two side walls of the winding posts, the four second insulating plates extend inwards along the outer splicing blocks and the inner splicing blocks and are abutted pairwise, the inner walls of the outer splicing blocks and the inner splicing blocks are covered, and the stator splicing blocks and the stator windings can be well isolated.

Alternatively, in other embodiments, the insulator may also be an insulating coating applied to the inner surfaces of the outer and inner segments and the outer surface of the winding post.

In this embodiment, after the insulating member 113 is disposed on the stator assembly 111, the winding branch 112 is formed by winding the insulating member 113. In this embodiment, each phase of stator winding 20 includes 4 winding branches 112,4 and 112 welded end to end, and by adopting this splicing manner, winding is facilitated, and this winding manner, the coil is directly wound on the insulating member 113, and each phase of winding branch 112 no longer needs jumper wire for winding, so that two ends of the stator core 10 have no coil leakage, and the length of the coil is greatly shortened, therefore, the copper consumption of the coil is reduced, the cost is saved, and the coil resistance becomes small, the temperature rise is reduced, the power loss is also reduced, the insulation difficulty is reduced, the wire binding and binding processes are also omitted, and the production efficiency is improved.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. The utility model provides an oil press, includes oil press main part and three-phase asynchronous motor, three-phase asynchronous motor includes stator core and three-phase stator winding, its characterized in that: the stator core is a hollow body formed by enclosing and splicing 12M stator splicing block assemblies, M is a natural number which is greater than or equal to 1, and each stator splicing block assembly comprises a stator splicing block, a winding branch wound on the stator splicing block and an insulating piece arranged between the stator splicing block and the winding branch.

2. An oil press as claimed in claim 1, characterized in that: and welding and fixing two adjacent stator splicing blocks.

3. An oil press as claimed in claim 1, characterized in that: two side walls of each stator splicing block are respectively provided with a clamping rib and a clamping groove along the length direction, and two adjacent stator splicing blocks are fixedly clamped with the clamping grooves through the clamping ribs.

4. A hydraulic press as claimed in claim 3, wherein: the stator piece includes interior piece, outer piece, and fixed connection in the coaxial setting piece with spool between the piece is pieced outward to interior piece, outer piece and spool enclose the transversal "worker" font of personally submitting after the amalgamation, adjacent two interior piece, outer piece and the spool of stator piece enclose and form the stator groove, joint rib and draw-in groove are located respectively on the both sides wall of outer piece.

5. An oil press as claimed in claim 4, wherein: the insulating piece comprises two end covers which are respectively arranged at two ends of the stator splicing block, and two insulating papers which are respectively arranged at two sides of the stator splicing block.

6. An oil press as claimed in claim 5, wherein: the end cover comprises a first insulating block with a U-shaped cross section and covered at the end part of the winding column, and two second insulating blocks respectively positioned at two ends of the first insulating block and respectively attached to the outer splicing block and the inner splicing block.

7. An oil press as claimed in claim 5, wherein: the cross section of the insulating paper is also U-shaped, and the insulating paper comprises a first part and two second parts, wherein the first part is arranged along the side wall of the wrapping post, the two second parts are respectively arranged along the inner walls of the outer splicing block and the inner splicing block, and the two second parts are inwards folded in half and wrap the stator winding together with the first part.

8. An oil press as claimed in claim 7, characterized in that: the insulator includes two end caps inserted opposite to each other in the length direction of the stator segment, and the winding branch is wound around the two end caps.

9. An oil press as claimed in claim 8, characterized in that: each end cover comprises a first insulating plate with a U-shaped cross section and covered at the end part of the winding column, and two second insulating plates positioned at two ends of the first insulating plate and respectively attached to the outer splicing block and the inner splicing block, wherein the two first insulating plates extend inwards along the winding column and are abutted, and the four second insulating plates of the two end covers extend inwards along the outer splicing block and are abutted.

10. An oil press as claimed in claim 4, wherein: the insulator includes an insulating coating applied to the inner surfaces of the outer and inner segments and the outer surface of the winding post.