CN2415862Y

CN2415862Y - Current rivet heater

Info

Publication number: CN2415862Y
Application number: CN 00231005
Authority: CN
Inventors: 金沙江
Original assignee: Zhangjiakou Rolling Stock Section Beijing Railway Subbureau
Current assignee: Zhangjiakou Rolling Stock Section Beijing Railway Subbureau
Priority date: 2000-04-04
Filing date: 2000-04-04
Publication date: 2001-01-24
Anticipated expiration: 2010-04-04

Abstract

The utility model relates to a current type rivet heater. A step-down transformer and an electric control part are arranged inside a box body of the heater. A magnetic clamping device, a workpiece support, and a fixed electrode are fixedly arranged on a top board on the upper part of the box body, wherein, the workpiece support is arranged between the clamping device and the fixed electrode. The physical characteristic of metal electric heat is utilized. The temperature of the current type rivet heater is raised to a red heat state rapidly within short time by using a working current with a low voltage and a heavy current through heated component parts. In addition, heating time is controlled automatically by a time control circuit to ensure the heating temperature. The current type rivet heater has the advantages of rapid heating, cleanness, energy saving, and convenient simple and safe operation.

Description

Current type rivet heater

The utility model relates to a kind of parts heater, especially so a kind of current type rivet heater, it utilizes the physical characteristic of metal electric heating, with the operating current of low-voltage, big electric current, by being heated part, make it be warming up to the red heat state at short notice rapidly.

Present heating to this class rivet, generally take flame heat, burning heating as coal, gas, oil, mode with the resistance furnace heating, the time of heating is longer, and temperature control is difficult, inconvenient operation, fume is big, sanitary condition is relatively poor when therefore working, and the energy consumption height once need heat many rivets usually, heating back as untimely use, then need heating repeatedly, under long-time red heat state repeatedly, rivet is with decarburization, quality is descended, particularly can not satisfy the heat request that adds of a rivet.And the requirement and the characteristics of rolling stock repairing department riveted joint operation are: the workload instability, sometimes many, sometimes few, the operation of every rivet is inequality blanking time, irregular, and every batch of riveted joint job task is generally less, only needs 2-4 bar rivet usually, therefore, technique known can't satisfy the needs of real work.

The purpose of this utility model is that a kind of rivet heater will be provided, and is especially a kind of in riveted joint during operation, can be immediately with rivet apace by cold conditions, be heated to the red heat state, just can rivet immediately, simple, convenient, sanitation and hygiene, energy-conservation current type rivet heater.

The purpose of this utility model is achieved in that a kind of current type rivet heater, its box house is provided with step-down transformer and automatically controlled part, one electromagnetism clamping device, work support and fixed electrode are installed on the top board on described casing top, wherein, work support is arranged between clamping device and the fixed electrode.

The current type rivet heater that the utility model proposes provides low-voltage by step-down transformer, the power supply of big electric current, electromagnetism clamping device drive electrode clamps workpiece, constitute the closed-loop path, make highdensity big electric current flow through workpiece, allow workpiece can be at short notice heating up rapidly, and control time of heating automatically with the time control circuit, guarantee heating-up temperature, heating is cleaned clean rapidly, energy-conservation, and it is easy to operate, succinctly, safety, a Φ 12mm, the rivet of long 60mm, about 10 ℃ of normal temperature states, be heated to 850 ℃ of whole red heat states, only need 14 seconds of switching on, the actual measurement primary current is 38-40A, voltage 380V, power consumption only is 0.06 degree, and when not heating, the complete machine power consumption is almost nil, operating noise is very little, and no flue dust produces.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the structural representation according to the current type rivet heater that the utility model proposes;

Fig. 2 is the circuit theory diagrams according to the current type rivet heater that the utility model proposes.

Below in conjunction with accompanying drawing and most preferred embodiment thereof the concrete structure that the utility model proposes is further described.

As shown in Figure 1, the current type rivet heater that the utility model proposes is a casing shape, inside at the casing 9 that has the protection of iron net is provided with step-down transformer 8 and automatically controlled part 11, the top of described casing 9 is provided with glassfiber insulation top board 1, which is provided with electromagnetism clamping device 17, work support 5 and fixed electrode 6, wherein, work support 5 is arranged between clamping device 17 and the fixed electrode 6, described fixed electrode 6 is fixed on the roof box by means of fixed mount 16, and the bottom of described casing 9 is equiped with Moving caster 12.

Above-mentioned clamping device 17 comprises: a guidance body 15, electromagnetism push rod 2, return spring 14, DC electromagnet 13 and float electrode 3, wherein, the guidance body 15 that links to each other with roof box 1 is provided with a stepped through hole, the one electromagnetism push rod 2 that is arranged with return spring 14 is located in the through hole of guidance body 15, one end and the DC electromagnet 13 of described electromagnetism push rod 2 link, and the other end and float electrode 3 link.

Be connected by soft copper guide plate 7 between the inferior utmost point of above-mentioned transformer 8 and float electrode 3 and the fixed electrode 6.

As shown in Figure 2, this is the circuit theory diagrams of the current type rivet heater that the utility model proposes, and wherein, an end of power supply connects the end of a start button switch TA, and the other end of start button TA connects the second time breaker JS ₂The time-delay normally-closed contact and the primary winding of electromagnet D, second time relay JS ₂The other end of delayed contact connect very first time relay J S ₁Primary winding, very first time relay J S ₁With the other end ground connection of electromagnet D, very first time relay J S ₁Normally opened contact in parallel with above-mentioned start button switch TA; The contactor C and second time relay JS ₂The primary winding parallel connection after the serial connection second time relay JS ₂The time-delay normally opened contact be connected between power supply and the ground wire.

During use, under the original state, transformer 8, DC electromagnet 13 no powers, float electrode 3 is in deployed position, when needing heating, heated rivet 4 is put into work support 5 between two electrodes, press start button 10, DC electromagnet 13, electromagnetism push rod 2 is released, back-moving spring 14 compressions, and float electrode 3 is released, rivet 4 is clamped between fixed electrode 6 and the float electrode 3 vertically the forming circuit loop; Time relay JS ₁Delay time after 1～2 second, the contactor C of starting transformer 8 makes transformer 8 energisings automatically, and secondary induction goes out big electric current, transfers to rivet 4 and heats; Delay circuit is elementary (time is adjustable) automatic disconnection in 14 seconds transformer 8, and heating stops, and makes DC electromagnet 13 dead electricity, electromagnetism push rod 2, float electrode 3 spring 14 that is reset push back and reset; Can take out the rivet of red heat and rivet operation; System restPoses.

Claims

1. current type rivet heater, it is characterized in that: described heater box house is provided with step-down transformer and automatically controlled part, one electromagnetism clamping device, work support and fixed electrode are installed on the top board on described casing top, wherein, work support is arranged between clamping device and the fixed electrode.

2. a kind of current type rivet heater according to claim 1, its spy is: described clamping device comprises: a guidance body, electromagnetism push rod, return spring, DC electromagnet and float electrode, wherein, the guidance body that links to each other with roof box is provided with a stepped through hole, the one electromagnetism push rod that is arranged with return spring is located in the through hole of guidance body, one end and the DC electromagnet of described electromagnetism push rod link, and the other end and float electrode link.

3. a kind of current type rivet heater according to claim 1, its spy is: be connected by the soft copper guide plate between the inferior utmost point of described transformer and float electrode and the fixed electrode.

4. a kind of current type rivet heater according to claim 1, its spy is: an end of power supply connects an end of a start button switch, the other end of start button connects the time-delay normally-closed contact of second time breaker and the primary winding of electromagnet, the other end of the delayed contact of second time relay connects the primary winding of very first time relay, the other end ground connection of very first time relay and electromagnet, the normally opened contact of very first time relay and above-mentioned start button switch in parallel; The time-delay normally opened contact that is connected in series second time relay after the primary winding parallel connection of contactor and second time relay is connected between power supply and the ground wire.

5. a kind of current type rivet heater according to claim 1, its spy is: described casing is the casing that has the protection of iron net, and its underpart is equiped with Moving caster, and the top board on its top is the glass fibre top board.