CN211079230U

CN211079230U - Induction hardening equipment of self-cooling type grip-pad

Info

Publication number: CN211079230U
Application number: CN201922056186.3U
Authority: CN
Inventors: 张博赟; 史和春; 雷春喜; 祁红军; 张洋
Original assignee: Liyang Yongheng Heattreatment Co ltd
Current assignee: Liyang Yongheng Heattreatment Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-07-24
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses an induction hardening device of self-cooling type grip-pad relates to induction hardening equipment field, and it includes induction heating pipe, collector pipe and quenching chamber, the collector pipe below is located to the quenching chamber, and induction heating pipe's both ends communicate respectively has the collector pipe, be equipped with the cooling chamber between quenching chamber and the collector pipe, the both sides in cooling chamber communicate respectively has second inlet tube and second outlet pipe, the cooling chamber is located between collector pipe and the quenching chamber and with the collector pipe mutual insulation, a plurality of hole for water sprayings have been seted up towards the work piece to the quenching chamber. The utility model has the effects of higher equipment safety during quenching and higher quality of a hardening layer obtained on the surface of a workpiece after quenching.

Description

Induction hardening equipment of self-cooling type grip-pad

Technical Field

The utility model relates to the technical field of induction hardening equipment, in particular to an induction hardening device of a self-cooling type creeper tread.

Background

The induction quenching principle is that a workpiece is placed in an inductor, an alternating magnetic field is utilized to generate induced current with the same frequency in the workpiece, the induced current is non-uniform in distribution in the workpiece, strong in surface and weak in the interior and close to 0 in the center, the surface of the workpiece can be rapidly heated by utilizing the skin effect, the temperature rise of the center is small, and therefore the surface of the workpiece is quenched.

The track shoe 1 is one of chassis parts of heavy machinery, the structure of the track shoe 1 is shown in fig. 1, and comprises a base plate 11, wherein rib plates 12 are oppositely arranged in the middle of the base plate 11, a first engaging surface 13 and a second engaging surface 14 are arranged between the two rib plates 12 and are used for being engaged with other parts, and in practical application, the first engaging surface 13 and the second engaging surface 14 are easy to wear, so that extremely high strength, toughness and wear resistance need to be obtained through surface quenching.

As shown in fig. 2, the induction hardening device of the second meshing surface 14 of the track shoe 1 includes an induction heating pipe 3 adapted to the second meshing surface 14 and bus bars 2 arranged oppositely, the bus bars 2 are mounted on the intermediate frequency induction hardening equipment and connected to a transformer, an insulating plate 25 made of mica is arranged between the two bus bars 2, two ends of the induction heating pipe 3 are respectively connected with the two bus bars 2 through bus pipes 24, the two bus pipes 24 are respectively communicated with a first water inlet pipe 241 and a first water outlet pipe 242 for supplying water to cool the induction heating pipe 3, one side of the bus pipe 24 facing the second meshing surface 14 is connected with a hardening cavity 5, and the hardening cavity 5 and the bus pipes 24 are insulated from each other; the two ends of the quenching cavity 5 are connected with third water inlet pipes 51 which are oppositely arranged, the quenching cavity 5 is obliquely arranged towards the side surface of the second meshing surface 14 and is densely provided with water spray holes (not shown in the figure), and the oblique arrangement can increase the quenching area of the surface of the workpiece; the induction heating pipe 3 generates an alternating magnetic field to heat the surface of the workpiece, and after heating is finished, the quenching cavity 5 quenches the second meshing surface 14 through the water spraying hole.

However, when the induction heating pipe is heated, the temperature of the induction heating pipe is very high, so that the induction heating pipe can be burnt out to cause danger or accidents, and heat is easily transferred to the quenching cavity, so that the temperature of the quenching cavity is high, the temperature of water entering the quenching cavity is also high, the quenching cooling speed is reduced, and the quality of a quenched layer on the surface of a workpiece after quenching is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an induction hardening device of self-cooling type grip-pad has the higher effect of the higher quality of the hardening layer that equipment security was higher and the back work piece surface obtained of quenching when quenching.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides an induction hardening device of self-cooling type grip-pad, includes induction heating pipe, collecting pipe and quenching chamber, the collecting pipe below is located to the quenching chamber, and induction heating pipe's both ends communicate respectively has the collecting pipe, be equipped with the cooling chamber between quenching chamber and the collecting pipe, the both sides in cooling chamber communicate respectively has second inlet tube and second outlet pipe, the cooling chamber is located between collecting pipe and the quenching chamber and with the collecting pipe mutual insulation, a plurality of hole for water jets have been seted up towards the work piece to the quenching chamber.

By adopting the technical scheme, on the basis that the collecting pipe is filled with water to cool the induction heating pipe, the cooling cavity further cools the induction heating pipe, so that the induction heating pipe is not easy to burn out due to overlarge current, and the effect of protecting the induction heating pipe is achieved; meanwhile, the heat transfer of the induction heating pipe to the quenching cavity is reduced, the temperature of cooling water in the quenching cavity is ensured to be proper, the quenching cooling speed is further improved, and the quenching effect is improved.

The utility model discloses further set up to: the induction heating pipe comprises a plurality of vertical induction pipes and transverse induction pipes, and the vertical induction pipes and the transverse induction pipes are sequentially and alternately connected to form a wave structure.

By adopting the technical scheme, the space utilization rate is increased, the coverage area of the induction heating pipes in the same area is larger, and the heating effect of the induction heating pipes is improved.

The utility model discloses further set up to: two all be equipped with insulating adhesive tape on the collecting pipe, be equipped with the first insulation board rather than the butt on the collecting pipe, cooling chamber and insulating adhesive tape butt, first insulation board is connected through the bolt with the cooling chamber.

Through adopting above-mentioned technical scheme, be connected cooling chamber and quenching chamber and collecting pipe, cooling chamber and collecting pipe do not have direct contact, can not become the conductor of two above-mentioned collecting pipes, just also can not arouse the short circuit of two above-mentioned collecting pipes, and then play safety protection's effect.

The utility model discloses further set up to: and a second insulating plate is arranged above one end, far away from the second meshing surface, of the induction heating pipe, and the second insulating plate is connected with the induction heating pipe through a bolt.

By adopting the technical scheme, one end of the induction heating pipe, which is far away from the second meshing surface, is reinforced, so that the induction heating pipe is not easy to deform during heating.

The utility model discloses further set up to: and a third insulating plate is arranged at one end of the induction heating pipe close to the second meshing surface and at one side far away from the second meshing surface, and the third insulating plate is connected with the induction heating pipe through a bolt.

Through adopting above-mentioned technical scheme, cooperation second insulation board is consolidated induction heating pipe wholly, makes induction heating pipe be difficult for taking place the deformation when heating.

The utility model discloses further set up to: the induction heating pipe comprises an induction heating pipe body and is characterized in that a magnetizer is arranged above the induction heating pipe body, the magnetizer comprises a silicon steel sheet and a magnetic powder layer, an insulating layer is arranged on the surface of the silicon steel sheet, an opening is formed in the silicon steel sheet, the opening is matched with the induction heating pipe body in shape, the induction heating pipe is located in the opening of the silicon steel sheet, the silicon steel sheet is arranged along the induction heating pipe array, the magnetic powder layer is coated outside the silicon steel sheet, and the silicon steel sheet is fixed on the induction heating pipe.

By adopting the technical scheme, the insulating layer is arranged on the surface of the silicon steel sheet, so that the resistivity of the silicon steel sheet is increased, the loss of electric energy caused by eddy current can be reduced, meanwhile, the silicon steel sheet has good magnetic conductivity, the magnetic flux density can be increased, the strength of an alternating magnetic field is further improved, and the heating effect of the induction heating pipe is better; the magnetic powder layer can bond the silicon steel sheet on the induction heating pipe.

The utility model discloses further set up to: the diameter of each water spraying hole is 1.5 mm-2 mm, and the distance between every two adjacent water spraying holes is 4.5 mm-7 mm.

By adopting the technical scheme, the diameter of the water spraying hole influences the water pressure, and the sprayed water is insufficient due to overlarge diameter and directly falls under the influence of gravity; the diameter is too small, so that the sprayed water flow is too small to meet the quenching requirement, and the diameter of the water spray hole is in the range, so that the quenching effect is good; the position of the second meshing surface can not be effectively quenched due to the overlarge interval of the water spray holes, and the cooling speed of the second meshing surface is too high due to the overlarge interval of the water spray holes, so that the quality of a hardening layer is influenced.

To sum up, the utility model discloses a beneficial technological effect does:

1. the cooling cavity is arranged to further cool the induction heating pipe, so that the induction heating pipe is not easy to burn out due to overlarge current, and the effect of protecting the induction heating pipe is achieved; the heat transfer of the induction heating pipe to the quenching cavity is reduced, so that the temperature of cooling water in the quenching cavity is not too high, the quenching cooling speed is further improved, and the quality of a hardening layer obtained on the surface of a workpiece after quenching is improved;

2. through the setting of insulating adhesive tape and first insulating plate, make two above-mentioned collecting pipes be difficult for producing the short circuit, form safety protection, make workman's safety obtain the guarantee.

Drawings

FIG. 1 is a schematic view of a prior art track plate structure;

FIG. 2 is a schematic structural view of a prior art induction hardening apparatus;

FIG. 3 is a schematic view of a connection structure for embodying the entirety in the present embodiment;

FIG. 4 is a schematic view of the present embodiment for embodying an induction heating pipe and a water jet hole;

FIG. 5 is a schematic view of the present embodiment for showing the second water inlet pipe, the second water outlet pipe and the third water inlet pipe;

fig. 6 is a schematic diagram for showing the connection structure of the magnetizer and the induction heating pipe according to the present embodiment.

In the drawings, 1, a track shoe; 11. a base plate; 12. a rib plate; 13. a first mating surface; 14. a second mating surface; 2. a bus bar; 21. a bus bar; 22. a contact plate; 23. an electrode plate; 24. a collector pipe; 241. a first water inlet pipe; 242. a first water outlet pipe; 243. an insulating tape; 25. an insulating plate; 3. an induction heating pipe; 31. a first insulating plate; 32. a second insulating plate; 33. a third insulating plate; 34. a magnetizer; 341. silicon steel sheets; 342. a magnetic powder layer; 4. a cooling chamber; 41. a second water inlet pipe; 42. a second water outlet pipe; 5. a quenching chamber; 51. a third water inlet pipe; 52. and (4) water spray holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

as shown in fig. 3, for the induction hardening device of the self-cooling track shoe disclosed by the present invention, the induction hardening device includes a bus bar 2 and an induction heating pipe 3 (as shown in fig. 4), one end of the bus bar 2 is installed on the intermediate frequency induction hardening equipment, the other end is connected with the induction heating pipe 3 through a bus bar 24 which is arranged oppositely, two of the bus bars 24 are respectively communicated with a first water inlet pipe 241 and a first water outlet pipe 242, after water is supplied, cooling water passes through the bus bar 24 and the induction heating pipe 3 to cool the induction heating pipe 3; the bus bar 2 comprises a bus plate 21, a contact plate 22 and a plate electrode 23, the bus plate 21 is connected with a bus pipe 24, one end of the contact plate 22 is connected with the bus plate 21, the other end of the contact plate 22 is connected with the plate electrode 23, the contact plate 22 is symmetrically arranged oppositely, an insulating plate 25 is arranged between the contact plate 22 and the plate electrode to prevent short circuit, the plate electrode 23 is installed on the medium-frequency induction quenching equipment and is connected with a transformer, and the bus bar 2 is used for conveying current to enable the induction heating pipe 3 to form an alternating.

As shown in fig. 3, in order to insulate the two bus pipes 24, an insulating tape 243 is sleeved on each of the two bus pipes 24 for insulation; the utility model discloses a cooling chamber 4, the utility model discloses a cooling chamber 24, the utility model discloses a cooling chamber 4, the utility model discloses a cooling chamber is connected with cooling chamber 4, cooling chamber 4 is the metal, direct and two above-mentioned collecting pipe 24 are connected, the event adopts first insulation board 31 to connect, first insulation board 31 is located collecting.

As shown in fig. 4 and fig. 5, two ends of the cooling cavity 4 are respectively communicated with a second water inlet pipe 41 and a second water outlet pipe 42, and the cooling cavity 4 is used for absorbing heat on the collecting pipe 24; the cooling cavity 4 is welded with a quenching cavity 5 on one side far away from the collecting pipe 24, the quenching cavity 5 is used for quenching a workpiece, the quenching cavity 5 is arranged obliquely and forms an included angle of 35-60 degrees with a vertical plane, in the embodiment, 45 degrees are adopted so as to achieve a better cooling effect and be beneficial to forming a uniform quenching layer, third water inlet pipes 51 are oppositely arranged at two ends of the quenching cavity 5 and are used for supplying water, water spray holes 52 are densely distributed on the quenching cavity 5, the diameter of each water spray hole 52 is 1.5-2 mm, in the embodiment, 1.8mm is adopted, the distance between adjacent water spray holes 52 is 4.5-7 mm, in the embodiment, 5mm is adopted, and the arrangement can enable the sprayed water flow to achieve a due cooling effect and form a quenching layer with better quality.

As shown in fig. 4, in order to improve the heating effect of the induction heating pipe 3 and improve the space utilization rate thereof, the induction heating pipe 3 is provided with a wave structure, and comprises vertical induction pipes (not shown in the figure) and horizontal induction pipes (not shown in the figure), which are alternately connected in sequence, and the overall shape of the induction heating pipe 3 is adapted to the shape of the second meshing surface 14, so that the overall distance between the two is kept consistent, and the second meshing surface 14 is heated more uniformly; the cross section of the induction heating pipe 3 in the embodiment is rectangular, so that the possibility of soft spots at the joint of the second meshing surface 14 and the rib plate 12 can be reduced.

As shown in fig. 3, a high temperature may be generated when the induction heating pipe 3 is heated, the induction heating pipe 3 may be deformed, in order to solve the problem, a second insulation plate 32 and a third insulation plate 33 are respectively disposed above both ends of the induction heating pipe 3 close to and far from the manifold 24, the induction heating pipe 3 is reinforced by the second insulation plate 32 and the third insulation plate 33, bolts are welded to the induction heating pipe 3, the number of the bolts is determined by the number of the wave-shaped wave crests and wave troughs of the induction heating pipe 3, a bolt is welded to each wave crest and wave trough, the bolt passes through the second insulation plate 32 or the third insulation plate 33 and is in threaded connection with a nut, and thus the fixation of the two insulation plates and the induction heating pipe 3 is achieved.

As shown in fig. 6, a magnetizer 34 is arranged above the induction heating pipe 3, the magnetizer 34 is formed by bonding a silicon steel sheet 341 and a magnetic powder layer 342, and then is bonded on the induction heating pipe 3, an insulating layer is arranged on the surface of the silicon steel sheet 341, i.e. an insulating paint is coated, and an opening is formed in the insulating layer, the shape of the opening is matched with the shape of the induction heating pipe 3, the silicon steel sheet 341 is sleeved on the induction heating pipe 3 by the opening and is densely distributed along the induction heating pipe 3 in an array manner, so that the electrical resistivity is increased, the magnetic conductivity is increased, the electric energy loss of an electric eddy current is reduced, the temperature of the induction heating pipe 3 is lower, the magnetic flux density is increased, the strength of an alternating magnetic field is further enhanced; in order to fix the silicon steel sheet 341 on the induction heating tube 3, the silicon steel sheet 341 is coated with the magnetic powder layer 342, and the joint between the silicon steel sheet 341 and the outside of the induction heating tube 3 is bonded by the magnetic powder layer 341.

The implementation principle of the embodiment is as follows: the transformer is powered on, the induction heating pipe 3 starts to work, induction current with the same frequency is generated in the track shoe 1 by using the alternating magnetic field to heat the second meshing surface 14, water flows through the first water inlet pipe 241, cooling water flows through the whole induction heating pipe 3 and flows out from the first water outlet pipe 242 to absorb heat for the induction heating pipe 3 and reduce the possibility of burning out of the induction heating pipe, meanwhile, water also flows through the second water inlet pipe 41, and the cooling water flows through the cooling cavity 4 and flows out from the second water outlet pipe 42 to absorb heat for the induction heating pipe 3 and the quenching cavity 5; after heating and heat preservation for a period of time, the induction heating pipe 3 stops working, the third water inlet pipe 51 is filled with water, the quenching cavity 5 sprays water from the water spray holes 52 to cool and quench the second meshing surface 14, so that the second meshing surface is cooled to below Ms (temperature value at which martensite appears) quickly to obtain a hardening layer, and quenching is finished.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an induction hardening device of self-cooling type grip-pad, includes induction heating pipe (3), collecting pipe (24) and quenching chamber (5), collecting pipe (24) below is located in quenching chamber (5), and induction heating pipe's (3) both ends communicate respectively has collecting pipe (24), its characterized in that: quenching chamber (5) and collecting pipe (24) between be equipped with cooling chamber (4), the both sides of cooling chamber (4) communicate respectively has second inlet tube (41) and second outlet pipe (42), cooling chamber (4) are located between collecting pipe (24) and the quenching chamber (5) and with collecting pipe (24) mutual insulation, a plurality of hole for water jets (52) have been seted up towards the work piece in quenching chamber (5).

2. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 1, wherein: the induction heating pipe (3) comprises a plurality of vertical induction pipes and transverse induction pipes, and the vertical induction pipes and the transverse induction pipes are sequentially and alternately connected to form a wave structure.

3. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 2, wherein: two all be equipped with insulating adhesive tape (243) on collecting pipe (24), be equipped with first insulation board (31) rather than the butt on collecting pipe (24), cooling chamber (4) and insulating adhesive tape (243) butt, first insulation board (31) are connected through the bolt with cooling chamber (4).

4. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 3, wherein: and a second insulating plate (32) is arranged above one end, far away from the first meshing surface (13), of the induction heating pipe (3), and the second insulating plate (32) is connected with the induction heating pipe (3) through a bolt.

5. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 4, wherein: and a third insulating plate (33) is arranged at one end, close to the second meshing surface (14), of the induction heating pipe (3) and at one side, far away from the second meshing surface (14), and the third insulating plate (33) is connected with the induction heating pipe (3) through a bolt.

6. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 5, wherein: the induction heating pipe is characterized in that a magnetizer (34) is arranged above the induction heating pipe (3), the magnetizer (34) comprises a silicon steel sheet (341) and a magnetic powder layer (342), an insulating layer is arranged on the surface of the silicon steel sheet (341), an opening is formed in the silicon steel sheet (341), the opening is matched with the appearance of the induction heating pipe (3), the induction heating pipe (3) is located in the opening of the silicon steel sheet (341), the silicon steel sheet (341) is arranged along the induction heating pipe (3), the magnetic powder layer (342) is coated outside the silicon steel sheet (341), and the silicon steel sheet (341) is fixed on the induction heating pipe (3) through the magnetic powder layer (342).

7. The induction hardening apparatus of a self-cooling track shoe as set forth in claim 1, wherein: the diameter of the water spray holes (52) is 1.5 mm-2 mm, and the distance between the adjacent water spray holes (52) is 4.5 mm-7 mm.