CN210420052U - Heat treatment pit furnace built-in quenching tool - Google Patents
Heat treatment pit furnace built-in quenching tool Download PDFInfo
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- CN210420052U CN210420052U CN201920696108.7U CN201920696108U CN210420052U CN 210420052 U CN210420052 U CN 210420052U CN 201920696108 U CN201920696108 U CN 201920696108U CN 210420052 U CN210420052 U CN 210420052U
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Abstract
The utility model discloses an internal quenching tool of a heat treatment pit furnace, which comprises a suspender, a hanging seat and a group of lifting lugs, wherein the suspender is of an integrated structure; the hanging seat is fixedly arranged below the hanging rod in a disc shape, and a group of hanging frames are distributed on the top of the hanging seat at equal angles along the circumferential direction; the lifting lugs are respectively and fixedly arranged on the same side surface of the hanger in sequence and are vertical to the surface of the hanger; a lifting ring fixedly connected with the shaft parts is hung on the lifting lug; the hanging seat is located on the bearing ring in the shaft furnace. The assembling method of the tool comprises the steps of manufacturing the tool, installing shaft parts, placing the tool and the like, wherein in the step of installing the shaft parts, the number of the shaft parts needing to be installed is judged manually, so that the shaft parts are symmetrically hung around the center of the hanging bracket. By adopting the structure, a plurality of workpieces can be processed simultaneously, the production efficiency is improved, the production cost is reduced, and the workpieces are suspended in the air, so that the occurrence of heat treatment distortion is reduced; the assembly method can improve the adaptability of the tool to heat treatment and improve the stability of the tool in the process of hanging the workpiece.
Description
Technical Field
The utility model relates to a heat treatment pit furnace built-in quenching frock belongs to heat treatment hoist frock technical field.
Background
Quenching is an important content of a heat treatment process, a large-scale pit furnace is generally used for quenching heat treatment of a workpiece in the practice of shaft parts, the weight of the treated workpiece is generally larger, and higher heating temperature and longer heating time are required. At present, most of tools are used by an external-bearing type suspension pit furnace, the external-bearing type suspension pit furnace cannot be provided with a circulating fan, and the uniformity of furnace temperature is not high. The precision of the current manufacturing production to equipment is higher and higher, a shaft furnace is provided with a circulating fan to become a normal state, the shaft furnace provided with the circulating fan requires that a workpiece is loaded in an internal bearing type furnace loading mode, and the built-in quenching tool for the shaft furnace is designed to meet the production requirement.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a heat treatment pit furnace built-in quenching tool which can simultaneously treat a plurality of workpieces, improve the production efficiency and reduce the production cost, and the workpieces are suspended in the air, thereby reducing the occurrence of heat treatment distortion; the method can improve the adaptability of the tool to heat treatment, improve the stability of the tool in the process of hanging a workpiece, is simple and convenient to operate, and saves manpower.
The utility model adopts the following technical proposal for solving the technical problems, and is an internal quenching tool of a heat treatment pit furnace, which is characterized in that: the hanging rod comprises a hanging rod with an integrated structure and a disc-shaped hanging seat positioned below the hanging rod; the top of the disc-shaped hanging seat is bent outwards at equal intervals along the radial direction to form a group of hanging frames; the edges of adjacent hanging brackets are connected in sequence to form a closed loop; lifting lugs are arranged on the same side of the lifting frame and are perpendicular to the surface of the lifting frame; a lifting ring fixedly connected with the shaft parts is hung on the lifting lug; the hanging seat is located on the bearing ring in the shaft furnace. Thickness d of the hanging ring1The relationship between unit mm and the mass G and unit kg of the shaft part satisfies: g =2 k · pi · d1 2And/4, wherein k is a safety coefficient and has a value range of 0.8-0.9.
Furthermore, the top of the hanger rod is provided with a step so as to be convenient for grabbing in and out of the furnace by using special hanging tongs.
Furthermore, the top of the hanging ring is in an inverted V shape, the inner side of the vertex angle of the hanging ring is hung on the lifting lug, the lower part of the hanging ring extends downwards in parallel to form a connecting part, and the connecting part is fixedly connected with the shaft part.
Furthermore, the hanging seat is a four-corner hanging seat, four lifting lugs are distributed at equal angles of 90 degrees in the circumferential direction, and the total mass G of the shaft part hung on the lower portion of the four lifting lugs1Less than or equal to 3375 kg. Or the hanging seat is a hexagonal hanging seat, six hanging brackets are circumferentially distributed at equal angles of 60 degrees, lifting lugs are arranged on the same side of each hanging bracket, and the total mass G of the shaft part hung on the lower part of each hanging bracket1≤2250kg。
The middle position of the edge of the top of the hanging bracket is provided with a bayonet, and the corresponding position of the wind scooper is provided with a notch; the bayonet and the notch are fixedly inserted.
The utility model has the advantages that: the utility model discloses frock simple structure, processing convenience and operation are simple swift more. The assembling method of the tool comprises the steps of manufacturing the tool, installing shaft parts, placing the tool and the like, wherein in the step of installing the shaft parts, the number of the shaft parts needing to be installed is judged manually, so that the shaft parts are symmetrically hung around the center of the hanging bracket. By adopting the structure, a plurality of workpieces can be processed simultaneously, the production efficiency is improved, the production cost is reduced, and the workpieces are suspended in the air, so that the occurrence of heat treatment distortion is reduced; the assembly method can improve the adaptability of the tool to heat treatment and improve the stability of the tool in the process of hanging the workpiece.
Drawings
FIG. 1 is a sectional view of a quenching tooling structure according to an embodiment.
FIG. 2 is a schematic view of a hanging structure of an axial part according to the embodiment.
Fig. 3 is a schematic structural view of a four-corner hanging seat fixture according to an embodiment.
FIG. 4 is a schematic view of an air guiding cover according to an embodiment.
Fig. 5 is a schematic structural view of a second hexagonal socket tool according to an embodiment.
In the figure, 1-1 and 2-1 are suspension rods, 1-2 four-corner suspension seats, 2-2 hexagonal suspension seats, 1-3 and 2-3 lifting lugs, 1-4 suspension frames, 4 lifting rings and 5-axis parts.
Detailed Description
Example one
The technical scheme of the utility model is further explained in detail with the attached drawings as follows:
example 1
The utility model provides a heat treatment pit furnace built-in quenching tool, as shown in figure 1-2; comprises a suspender 1-1 with an integrated structure and a disc-shaped hanging seat 1-2 positioned below the suspender; the top of the disc-shaped hanging seat is bent outwards at equal intervals along the radial direction to form a group of hanging frames 1-4; the edges of adjacent hanging brackets are connected in sequence to form a closed loop 1-5; lifting lugs 1-3 are arranged on the same side of the hanger and perpendicular to the surface of the hanger; a lifting ring fixedly connected with the shaft parts is hung on the lifting lug; the hanging seat is located on the bearing ring in the shaft furnace. The tool is integrally cast, and the shaft part 5 is welded by a hanging ring 4 and then hung on the tool lifting lugs 1-3. The hanging seat 1-2 is located on the bearing ring in the shaft furnace.
As shown in figure 3, four hanging brackets and lifting lugs are distributed on the four-corner hanging seat 1-2 at equal angles of 90 degrees along the circumferential direction, a lifting ring 4 is hung on the lifting lugs 1-3, and a mass G is fixed at the lower part of the lifting ring1Less than 3375kg of shaft element 5. Hanging craneThickness d of ring 41(in mm) and the mass G (in kg) of the shaft part satisfy: g =2 k · pi · d1 2And/4, wherein k is a safety coefficient and takes a value of 0.85; the four-corner hanging seat 1-2 comprises four lifting lugs 1-3, 2 or 4 shaft parts can be hung simultaneously, and the 2 shaft parts must be symmetrically hung to ensure the balance of the tool.
In this embodiment, as shown in fig. 4, it is further preferable that a bayonet 6 is further respectively formed in the middle position of the top edge of the hanger, which is used for placing an air guiding cover 8 on the tooling, and a notch 7 is formed in the air cover 8 at a position corresponding to the bayonet 6; used for fixing the wind scooper. The circulating fan of the shaft furnace can play a role, air flow can circulate in the furnace, and the furnace temperature is more uniform.
The embodiment also discloses an assembly method of the built-in quenching tool for the shaft furnace, which comprises the following steps:
firstly, manufacturing a tool: the fixture is integrally cast by adopting ZG20 material, and is subjected to normalizing treatment after casting, wherein the normalizing process comprises the following steps: air cooling at 930 deg.C for 3.5H;
second step, installation axle part 5: preheating a shaft part 5, wherein the preheating temperature of the shaft part is 450 ℃, the preheating time is 3 hours, welding a lifting ring 4 on the top of the shaft part 5 after preheating, hanging the lifting ring 4 on a lifting lug for 1-3 after welding, and fixedly welding the lower part of the lifting ring 4 with the shaft part, wherein the value range of the welding line length L is 140 mm. If the length of the welding seam meets the condition, the shaft part can be kept from falling off;
and thirdly, placing a tool, and using a special lifting clamp to integrally lift the tool with the shaft part installed and place the tool in the shaft furnace so as to enable the lifting seat 1-2 to be located on a bearing ring in the shaft furnace. Because the four-corner hanging seat 1-2 comprises the four lifting lugs 1-3, 2 or 4 shaft parts must be placed, and the adoption of the method is beneficial to keeping the balance and the stability of the tool.
Example two
As shown in figure 5, six lifting lugs 2-3 are distributed on the hexagonal lifting seat 2-2 at an equal angle of 60 degrees along the circumferential direction, a lifting ring 4 is hung on the lifting lugs 2-3, and a mass G is fixed at the lower part of the lifting ring 41Less than 2250kg of shaft parts 5, before preheating the shaft parts 5, manually judging the number of shaft parts 5 to be mounted, and mounting the shaft parts5, welding a lifting ring 4 on the top. 3 or 6 shaft parts can be hung at the same time, and the 3 shaft parts need to be hung symmetrically. The rest of this embodiment is the same as the first embodiment.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a heat treatment pit furnace built-in quenching frock which characterized in that: the hanging rod comprises a hanging rod with an integrated structure and a disc-shaped hanging seat positioned below the hanging rod; the top of the disc-shaped hanging seat is bent outwards at equal intervals along the radial direction to form a group of hanging frames; the edges of adjacent hanging brackets are connected in sequence to form a closed loop; lifting lugs are arranged on the same side of the lifting frame and are perpendicular to the surface of the lifting frame; a lifting ring fixedly connected with the shaft parts is hung on the lifting lug; the hanging seat is located on the bearing ring in the shaft furnace.
2. The built-in quenching tool for heat treatment pit furnace of claim 1, characterized in that: the top of the hanger rod is provided with a step which is convenient for a hanging tong to grab in and out of the furnace.
3. The built-in quenching tool for heat treatment pit furnace of claim 2, characterized in that: the top of the lifting ring is inverted V-shaped, the inner side of the vertex angle of the lifting ring is suspended on the lifting lug, the lower part of the lifting ring extends downwards in parallel to form a connecting part, and the connecting part is fixedly connected with the shaft part.
4. The built-in quenching tool for heat treatment pit furnace of claim 3, characterized in that: the lower portion of the hanging ring is welded and fixed with the shaft part, and the value range of the length L of the welding line is 120-150 mm.
5. The built-in quenching tool for heat treatment pit furnace of claim 4, characterized in that: the hanging seat is a four-corner hanging seat, four hanging brackets are distributed at equal angles of 90 degrees in the circumferential direction, and lifting lugs are arranged on the same sides of the hanging brackets respectively.
6. The built-in quenching tool for heat treatment pit furnace of claim 4, characterized in that: the hanging seat is a hexagonal hanging seat, six hanging brackets are circumferentially distributed at an equal angle of 60 degrees, and lifting lugs are respectively arranged on the same sides of the hanging brackets.
7. The built-in quenching tool for heat treatment pit furnace of claim 6, characterized in that: the hanging bracket is characterized by also comprising an air guide cover arranged on the hanging bracket, wherein a bayonet is arranged in the middle of the edge of the top of the hanging bracket, and a notch is arranged at the corresponding position of the air guide cover; the bayonet and the notch are fixedly inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696108.7U CN210420052U (en) | 2019-05-15 | 2019-05-15 | Heat treatment pit furnace built-in quenching tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920696108.7U CN210420052U (en) | 2019-05-15 | 2019-05-15 | Heat treatment pit furnace built-in quenching tool |
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| CN210420052U true CN210420052U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129533A (en) * | 2019-05-15 | 2019-08-16 | 南京中船绿洲机器有限公司 | A kind of heat treatment pit-type furnace built-in type quenching tooling and its assembly method |
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2019
- 2019-05-15 CN CN201920696108.7U patent/CN210420052U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129533A (en) * | 2019-05-15 | 2019-08-16 | 南京中船绿洲机器有限公司 | A kind of heat treatment pit-type furnace built-in type quenching tooling and its assembly method |
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