CN205318955U

CN205318955U - Little inertia screwed pipe formula electro -magnet

Info

Publication number: CN205318955U
Application number: CN201620058384.7U
Authority: CN
Inventors: 邓嫄媛; 张跃华; 李俭; 唐茂; 赵云宝; 庞宇; 高蕾娜
Original assignee: Chengdu University
Current assignee: Chengdu University
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2016-06-15
Anticipated expiration: 2026-01-21

Abstract

The utility model discloses a little inertia screwed pipe formula electro -magnet, the support mechanism comprises a guide sleeve, the yoke, the control coil, separate the magnetic ring, valve interface piece, the push rod with move the iron core, move the iron core, valve interface piece and control coil are installed in the yoke, it distributes around the axial wherein to move iron core and valve interface piece, the control coil is located the outside of moving iron core and valve interface piece, guide pin bushing and separate the magnetic ring and locate and move the iron core, between valve interface piece and the control coil, the push rod is connected on moving the iron core and is passed valve interface piece, the guide pin bushing includes anterior segment guide pin bushing and back end guide pin bushing, before the magnetic ring is located, between the back end guide pin bushing, it is porose along axial processing to move the iron core. The utility model discloses under the infrastructure, appearance and the dimension's that do not change existing proportion electro -magnet prerequisite, process the axial hole through adopting in moving the iron core, can reduce to move the quality of iron core to improve the linearity of proportion electro -magnet displacement - power characteristic, increase the working stroke of proportion electro -magnet.

Description

A kind of little inertia solenoid electromagnet

Technical field

This utility model relates to a kind of electric magnet, particularly relates to a kind of little inertia helix tube type bi-material layers electric magnet.

Background technology

As one of critical component in electrohydraulic proportional controller part, the function of proportion electro-magnet is the current signal converting to force or displacement that Proportional Amplifer are inputted. Therefore, the displacement force characteristic of electro-hydraulic proportional control technology comparative example electric magnet proposes strict requirement, namely proportion electro-magnet must possess the displacement force characteristic curve of level, in its effective impulse stroke, when coil current one timing, its power output keeps constant, and unrelated with the displacement of dynamic iron core.

Existing proportion electro-magnet is by plastic end cover, guide pin bushing, yoke, control coil, magnetism-isolating loop, basin shape pole shoe, valve interface block, push rod, magnetism isolating spacer, dynamic iron core and end cap interface block composition, wherein except plastic end cover, magnetism-isolating loop, control coil, push rod, magnetism isolating spacer, remaining parts is made by permeability magnetic material. The magnetic line of force produced by coil during the work of this proportion electro-magnet is divided into two branch road Φ 1 and Φ 2 through dynamic working gas gap between iron core and valve interface block, wherein Φ 1 branch road is through dynamic iron core axially through the working gas gap bottom basin shape pole shoe, returns to dynamic iron core form Guan Bi ring then through valve interface block, yoke, guide pin bushing; Φ 2 branch road, through the dynamic oblique tapered peripheral by basin shape pole shoe of iron core, arrives guide pin bushing front end, returns to dynamic iron core form Guan Bi ring then through valve interface block, yoke, guide pin bushing.

Existing proportion electro-magnet relies primarily on the basin shape pole shoe of special shape and the magnetic line of force is divided into two branch roads, by the relative size of relative dimensions adjustment the produced axial magnetic component of two magnetic line of force branch roads of basin shape pole shoe, thus producing the range of linearity (i.e. the impulse stroke of proportion electro-magnet) of one section of level of approximation on the displacement force curve of dynamic iron core. Owing to the dynamic iron core of existing proportion electro-magnet is solid, sole mass is relatively big, causes that its response time is longer, and displacement force characteristics linearity degree is also poor, the problems such as impulse stroke is relatively short.

Summary of the invention

The purpose of this utility model is in that to provide the little inertia solenoid electromagnet that a kind of displacement force characteristics linearity degree is better, impulse stroke is longer.

The little inertia solenoid electromagnet that this utility model provides includes guide pin bushing, yoke, control coil, magnetism-isolating loop, valve interface block, push rod and dynamic ferrum core, dynamic ferrum core, valve interface block and control coil are installed in yoke, wherein dynamic iron core and valve interface block are distributed before and after vertically, control coil is positioned at dynamic iron core and the outside of valve interface block, guide pin bushing and magnetism-isolating loop are located at dynamic ferrum core, between valve interface block and control coil, push rod is connected on dynamic iron core and traverse valve interface block, guide pin bushing includes leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop is positioned at, between back segment guide pin bushing, process porose in described dynamic iron core vertically.

Hole in above-mentioned dynamic iron core is cylindrical hole.

Hole in above-mentioned dynamic iron core is regular polygon hole.

This utility model is under the premise not changing the basic structure of existing proportion electro-magnet, profile and interface size, in dynamic iron core, axial hole is processed by adopting, the quality of dynamic iron core can being reduced, thus improving the linearity of proportion electro-magnet displacement force characteristic, increasing the impulse stroke of proportion electro-magnet.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the left view of the first dynamic iron core.

Fig. 3 is the A-A view of dynamic iron core shown in Fig. 2.

Fig. 4 is the left view of the dynamic iron core of the second.

Fig. 5 is the A-A view of dynamic iron core shown in Fig. 4.

Fig. 6 is the left view of the third dynamic iron core.

Fig. 7 is the A-A view of dynamic iron core shown in Fig. 6.

Fig. 8 is the left view of the third dynamic iron core.

Fig. 9 is the A-A view of dynamic iron core shown in Fig. 8.

In figure: 1 plastic end cover 2 guide pin bushing 3 yoke 4 control coil 5 magnetism-isolating loop 6 basin shape pole shoe 7 valve interface block 8 push rod 9 magnetism isolating spacer 10 moves iron core 11 end cap interface block

Detailed description of the invention

Below in conjunction with drawings and Examples, this utility model is described in further detail.

Embodiment 1

As shown in Figure 1, this utility model includes the guide pin bushing 2 being made up of permeability magnetic material, yoke 3, valve interface block 7, dynamic iron core 10, end cap interface block 11 and the plastic end cover 1 being made up of non-magnet material, control coil 4, magnetism-isolating loop 5, push rod 8 and magnetism isolating spacer 9, dynamic iron core 10 and valve interface block 7 are distributed before and after vertically, valve interface block 7 and control coil 4 are installed in yoke 3, control coil 4 is positioned at dynamic iron core and the outside of valve interface block 7, guide pin bushing 2 and magnetism-isolating loop 5 are located between dynamic iron core 10 and valve interface block 7 and control coil 4, push rod 8 is connected on dynamic iron core 10 and traverse valve interface block 7, guide pin bushing 2 includes leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop 5 is positioned at, between back segment guide pin bushing. after basin shape pole shoe 6 is positioned at magnetism-isolating loop 5. in order to alleviate the quality of dynamic iron core 10, the dynamic iron core 10 of this utility model is processed porose vertically, and the cross sectional shape in hole is unrestricted, it is possible to be the cylindrical hole shown in Fig. 2, Fig. 3, can also be the regular pentagon hole shown in Fig. 4, Fig. 5, and the irregularly-shaped hole shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9.

The foregoing is only specific embodiment of the utility model, it should be pointed out that to those of ordinary skill in the art under the premise without departing from this utility model use principle, it is also possible to do some modification and improvement, also should be regarded as utility model protection scope.

Claims

1. one kind little inertia solenoid electromagnet, including guide pin bushing, yoke, control coil, magnetism-isolating loop, valve interface block, push rod and dynamic ferrum core, dynamic ferrum core, valve interface block and control coil are installed in yoke, wherein dynamic iron core and valve interface block are distributed before and after vertically, control coil is positioned at dynamic iron core and the outside of valve interface block, guide pin bushing and magnetism-isolating loop are located at dynamic ferrum core, between valve interface block and control coil, push rod is connected on dynamic iron core and traverse valve interface block, guide pin bushing includes leading portion guide pin bushing and back segment guide pin bushing, before magnetism-isolating loop is positioned at, between back segment guide pin bushing, it is characterized in that: process porose in dynamic iron core vertically.

2. the little inertia solenoid electromagnet of one according to claim 1, it is characterised in that: the hole in described dynamic iron core is cylindrical hole.

3. the little inertia solenoid electromagnet of one according to claim 1, it is characterised in that: the hole in described dynamic iron core is regular polygon hole.