Shaking table magnetic structure and installation method thereof
Technical field
The present invention relates to a kind of electric vibration testing equipment, particularly a kind of magnetic structure and installation method that is applied to electric vibration testing equipment, belongs to dynamic environmental test technical field.
Background technology
Electrodynamic vibration shaker is current most popular a kind of vibratory equipment, it is according to electromagnetic induction principle work, when current-carrying conductor will be subject to the effect of electromagnetic force and moves in stationary magnetic field, the electric current passing through when the drive coil of shaking table produces vibration while producing exciting force with alternating signal.The drive coil of shaking table is in the space of a high magnetic field intensity, when the vibration signal of needs produces and leads on drive coil after power amplifier amplifies from signal generator or vibration controller, at this moment shaking table will produce vibration force and the vibrational waveform needing.
Existing electric vibration table is partly comprised of drive coil and moving component, moving component suspension and guide piece, magnetic circuit system and fulcrum arrangement etc. substantially.Consulting Fig. 1 is a kind of structural representation of existing shaking table magnetic circuit component, it comprises the magnetic structure being comprised of central magnetic pole 1 ', magnetic cylinder body, magnetic cylinder cap, magnetic cylinder bottom 2 ' and field coil etc., the fulcrum arrangement that air chamber 3 ', air spring 4 and admission piece form is also housed in magnetic structure, and lower tumbler 5, guided bearing axle 6 and upper guiding mechanism (not shown) form guide piece etc.There is the electric vibration table of this magnetic structure when assembling, need first by magnetic cylinder body overturn, to lower guiding and fulcrum arrangement are installed, it operates inconvenience, and in shaking table body structure, to there be gudgeon and stage body support, it can cause problems, for example, compared with easily causing, bumps and impaired between each assembly.
Summary of the invention
The object of the present invention is to provide a kind of shaking table magnetic structure and installation method, it is simple in structure, is easy to assembling, thereby overcomes deficiency of the prior art.
For realizing aforementioned goal of the invention, the present invention has adopted following technical scheme:
A kind of shaking table magnetic structure, comprise central magnetic pole, magnetic cylinder body, magnetic cylinder cap, magnetic cylinder bottom and field coil, wherein, described central magnetic pole top is provided with fulcrum arrangement, described fulcrum arrangement comprises air spring, air chamber and valve, further, described fulcrum arrangement also comprises the first of detachable and coaxial setting, second portion and third part, wherein said first fixing sleeve is located on second portion, described third part is fixedly connected on second portion one end, simultaneously, described second portion one end face Hai Yu first encloses formation at least in order to the cavity of accommodating described air spring, other end coordinates the described air chamber of formation with third part.
Further, described air spring one end is fixedly connected with described second portion through threaded fastener, and the other end is fixedly connected with moving-coil supporting axis of guide one end, and the described moving-coil supporting axis of guide other end passes described first.
Further, on described second portion, offer through hole, described threaded fastener one end is passed described through hole and is fixedly connected with air spring, and other end is substantially concordant with the other end of described second portion.
The other end that " substantially concordant " described herein refers to threaded fastener is slightly outstanding or be absorbed in a little described through hole from described through hole.
Further, described third part one end is blind end, and the other end penetrates described magnetic cylinder bottom, and is fixedly connected with described second portion other end.
Further, described air chamber is enclosed and is formed by described second portion and described third part.
Further, described second portion other end coordinates with described third part through terraced structure.
Further, described second portion one end coordinates with described first one end through terraced structure.
Further, between the described moving-coil supporting axis of guide and central magnetic pole, be also provided with lower tumbler.
An installation method for shaking table magnetic structure, it comprises:
Fulcrum arrangement is provided, and it is mainly comprised of air spring, detachable first, second portion and third part,
Described air spring lower end is fixedly connected with described second portion, upper end is fixedly connected with moving-coil supporting axis of guide lower end, and described second portion and first are inserted to described first successively from the upper end open portion of central magnetic pole, and make described first, second portion and third part coaxially arrange, make described moving-coil supporting axis of guide upper end pass described first simultaneously, then described second portion is fixedly connected on to first bottom, make described second portion upper surface, lower surface encloses formation at least in order to the cavity of accommodating described air spring and as an air chamber of the structural member of described fulcrum arrangement with first and third part respectively, thereby form fulcrum arrangement by described air spring and air chamber assembly,
And, described central magnetic pole is fixedly connected with magnetic cylinder body, magnetic cylinder cap, magnetic cylinder bottom and field coil, form described shaking table magnetic structure.
Further, this installation method comprises: utilize the vertical bolt part through described third part, second portion and first of plural number that described packaging part, third part are fixedly connected with second portion.
Further, between described third part and second portion and between described second portion and first, all through terraced structure, coordinate.
Further, between described first and central magnetic pole, through terraced structure and vertical plural bolt part through terraced structure, be fastenedly connected.
Compared with prior art, advantage of the present invention is at least: this magnetic circuit system of vibrating table is simple, can assemble by mode from the top down, particularly air chamber component wherein can be through described central magnetic pole assembling, simple to operate, be easy to dismounting and safeguard, be particularly useful for electric vibration testing equipment.
Accompanying drawing explanation
Fig. 1 is existing a kind of magnetic circuit system of vibrating table schematic diagram, and wherein, each assembly and Reference numeral thereof are respectively: central magnetic pole 1 ', magnetic cylinder bottom 2 ', air chamber 3 ', air spring 4, lower tumbler 5, moving-coil guided bearing axle 6;
Fig. 2 is a kind of magnetic circuit system of vibrating table schematic diagram in a preferred embodiment of the present invention, wherein, each assembly and Reference numeral thereof are respectively: central magnetic pole 1, first 11, second portion 12, third part 13, magnetic cylinder bottom 2, air chamber 3, air spring 4, lower tumbler 5, moving-coil guided bearing axle 6, valve 7.
Embodiment
Below in conjunction with preferred embodiment and accompanying drawing, technical scheme of the present invention is further described.
Consulting shown in Fig. 2 is a kind of magnetic circuit system of vibrating table of the present invention, comprise mainly by central magnetic pole 1, magnetic cylinder bottom 2, the magnetic circuit that magnetic cylinder cap and magnetic cylinder (not shown in FIG.) form, described central magnetic pole top is provided with at least the cavity in order to accommodating air spring 4, and its underpart is provided with air chamber 3, this air spring and air chamber assembly form a fulcrum arrangement.Further, described fulcrum arrangement comprises first 11, second portion 12 and the third part 13 of detachable and coaxial setting, wherein said first is set in central magnetic pole 1, described second portion is fixedly connected on first one end, simultaneously, described third part one end face also encloses and forms air chamber 3 with second portion the other end, and third part other end is blind end, and valve 7 is housed.
Previous designs also can be regarded as, by the part in central magnetic pole is cut out, and as central air chamber assembly, and in order not affect magnetic track area, also the part cutting out is coordinated with the central magnetic pole inner chamber originally being dug, this structure is convenient to fill from top to bottom air chamber structure.
Further, described air spring one end is fixedly connected with described second portion through threaded fastener, and the other end is fixedly connected with moving-coil supporting axis of guide one end, and the described moving-coil supporting axis of guide other end passes described central magnetic pole.
Further, on described second portion, offer through hole, described threaded fastener one end is passed described through hole and is fixedly connected with air spring, and other end is substantially concordant with an end face of described third part.
The other end that " substantially concordant " described herein refers to threaded fastener is slightly outstanding or be absorbed in a little described through hole from described through hole.
Further, described second portion one end can coordinate with first one end through terraced structure, and also can through threaded fastener, be fixedly connected with again, makes both connections more firm.
Further, described third part one end is blind end and valve is housed, and the other end penetrates described magnetic cylinder bottom, and is fixedly connected with described second portion other end.Wherein, described air chamber can be enclosed and be formed by described second portion and described third part.
Preferably, described second portion other end also can coordinate with described third part through terraced structure and also can through threaded fastener, be fixedly connected with again.
Further, lower tumbler 5 is arranged between the described moving-coil supporting axis of guide and central magnetic pole.
By previous designs, air chamber component can be loaded from central magnetic pole above, be convenient to handling, be particularly useful for without trunnion mounting structure.Its process can comprise:
Air spring lower end is fixed and is fixedly connected with described second portion, upper end is fixedly connected with moving-coil supporting axis of guide lower end, and described third part and second portion are inserted to described central magnetic pole successively from the upper end open portion of central magnetic pole, and make described first, second portion and third part coaxially arrange, make described moving-coil supporting axis of guide upper end pass described central magnetic pole simultaneously, then described second portion is fixedly connected on to first bottom, make described second portion upper surface, lower surface encloses formation at least in order to cavity and an air chamber of accommodating described air spring with first and third part respectively, thereby form fulcrum arrangement by described air spring and air chamber assembly, and, same, according to mode from the top down, described central magnetic pole is fixedly connected with magnetic cylinder body, magnetic cylinder cap, magnetic cylinder bottom and field coil, form described shaking table magnetic structure.
It should be noted that, above preferred embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, do various conversion or modification, all belonged to category of the present invention.