Immersed steel pipe quenching rotating mechanism

Abstract

The utility model discloses an immersed steel pipe quenching rotating mechanism, which solves the problems of non-uniform cooling, low product percent of pass and the like in the prior art, and is characterized in that the steel pipe rotating mechanism is carried on a quenching lifting frame, a plurality of groups of paired wheels are arranged in the length direction of a steel pipe, each group of paired wheels is provided with an independent drive, and the paired wheel group is provided with a short shaft; the main shaft is installed under each set of coupling wheels, each set of coupling wheels is driven by the double-row chain wheels on the main shaft, the coupling wheel set below each steel pipe is driven by the waterproof motor to rotate, and the chamber type furnace charging and discharging machine supporting arm can operate between neutral positions of each set of coupling wheels and does not interfere with the transmission shaft. A good rotating mode is provided for steel pipe quenching, a steel pipe cooling mode is improved, the productivity is greatly improved, and compared with a traditional immersion type quenching mode, the situation that the cooling temperature is inconsistent due to inconsistent water entry time is improved, the product quality is greatly improved, the production cost is saved, and the production efficiency is improved. The device can be widely applied to quenching heat treatment of chamber furnace steel pipes.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe quenching, and particularly relates to an immersion type steel pipe quenching rotating mechanism in which a large-section steel pipe is immersed in a water pool, thereby reducing deformation during quenching, improving production efficiency and reducing production costs. Background Art

[0002] After the steel pipe is heated in a chamber furnace, a lifting mechanism is used to quench it in water. Especially for steel pipes with large cross-sections and long sizes, when immersing them in water for quenching, the upper and lower surfaces of the steel pipe have inconsistent cooling rates due to different water entry times. There is a large temperature difference during the steel pipe entering the water, which can easily cause deformation of the steel pipe during quenching.

[0003] At present, steel pipes have a large diameter and a long size. When quenching in water, the lower part is immersed in water to cool down, and the temperature of the part below the water surface is about 1000℃. Under the action of thermal expansion and contraction, the steel pipe deforms greatly, seriously affecting product quality and pass rate. Summary of the Invention

[0004] The purpose of the utility model is to provide an immersion type steel pipe quenching rotation mechanism which improves production efficiency, reduces maintenance costs, provides a high-quality transportation method, and enhances the economic benefits of the enterprise.

[0005] The technical solution of the present utility model is as follows: it includes a quenching lifting frame, a quenching water tank, a supporting arm, a steel loading and unloading machine, a chamber furnace, etc., and a steel pipe rotating device is set on the top of the quenching lifting frame. The steel pipe rotating device is composed of a pair of wheels, a waterproof reducer, a bearing seat, a chain, a short shaft, a main shaft and a sprocket. The short shaft is fixedly installed on the top support seat of the quenching lifting frame through the bearing seat, the pair of wheels is installed on the short shaft, and a short shaft sprocket is set at one end of the short shaft. The main shaft is fixedly installed directly below the pair of wheels set on the top of the quenching lifting frame through the bearing seat, and a double-row sprocket is set at the corresponding position of the short shaft sprocket, which are respectively connected by chains. The waterproof reducer is set on one side of the quenching lifting frame and is connected to the double-row sprocket on one main shaft through the motor sprocket to form a driving shaft. The other main shafts are connected to the double-row sprockets on two adjacent main shafts through chains to form a passive shaft. The quenching lifting frame can automatically rise and fall in the quenching pool. A supporting arm is set at the front end of the steel loading machine. The supporting arm can move horizontally and lift between the wheel sets to take the steel pipe out of the chamber furnace and place it on the wheel set.

[0006] Furthermore, the steel pipe rotating device is composed of a pair of wheels, a waterproof reducer, a bearing seat, a chain, a short shaft, a main shaft and a sprocket. Multiple sets of pairs of wheels are arranged above each main shaft to support a steel pipe, and each set of pairs of wheels are equidistantly spaced.

[0007] The beneficial effects of the present invention are as follows: since a steel pipe rotating device consisting of a pair of wheel groups is added to the quenching lifting frame, it not only provides a good rotation method for steel pipe quenching and improves the steel pipe cooling method, but also greatly improves productivity. Compared with the traditional immersion quenching method, it improves the inconsistent cooling temperature caused by inconsistent water entry time, greatly improves product quality, saves production costs, has the advantages of compact structure, efficient operation, convenient maintenance, low accident rate, and saved maintenance costs, and can be widely used in chamber furnace steel pipe quenching heat treatment.

[0008] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0010] Figure 2 This is a side view of the structure of the utility model;

[0011] Figure 3 It is a schematic diagram of the top view structure of the utility model.

[0012] In the figure: 1 is a pair of wheels, 2 is a waterproof reducer, 3 is a bearing seat, 4 is a quenching lifting frame, 5 is a chain, 6 is a short shaft, 7 is a main shaft, 8 is a quenching pool, 9 is a supporting arm, 10 is a steel loading and unloading machine, 11 is a double-row sprocket, 12 is a short shaft sprocket, and 13 is a chamber furnace. DETAILED DESCRIPTION

[0013] Take the construction of a chamber heat treatment furnace as an example. The steel pipe has a diameter of φ610mm, a wall thickness of 50mm, a length of 13500mm, a kiln width of 14.5m, and a depth of 4.6m. There are 5 material positions in total. The quenching lifting frame 4 is equipped with 5 sets of rotating wheel mechanisms. A steel loading and unloading machine 10 is set up to transfer the steel pipes between production equipment. Figure 1 、 Figure 2 、 Figure 3As shown, the immersed steel pipe quenching rotation mechanism includes a quenching lift 4, a quenching water tank 8, a supporting arm 9, a steel loading and unloading machine 10, a chamber furnace 13, and other components. A steel pipe rotating device is installed on the top of the quenching lift 4. The steel pipe rotating device is composed of a pair of pulleys 1, a waterproof reducer 2, a bearing seat 3, a chain 5, a short shaft 6, a main shaft 7, and sprockets. The short shaft 6 is fixedly mounted on the top support of the quenching lift 4 via the bearing seat 3. The pair of pulleys 1 is mounted on the short shaft 6, and a short shaft sprocket 12 is installed at one end of the short shaft 6. The main shaft 7 is fixedly mounted directly below the pair of pulleys 1 installed on the top of the quenching lift 4 via the bearing seat 3. A double-row sprocket 11 is installed corresponding to the short shaft sprocket 12, and is connected to each other by a chain 5. A waterproof reducer 2 is mounted on one side of the quenching lift 4. It is connected to the double-row sprocket 11 on one main shaft 7 via a motor sprocket, forming the driving shaft. The remaining main shafts 7 are connected to the double-row sprockets 11 on two adjacent main shafts via chains, forming the driven shafts. Multiple pairs of pulleys 1 are positioned above each main shaft 7, supporting a steel pipe, with each pair of pulleys 1 spaced evenly apart. The quenching lift 4 can automatically rise and fall within the quenching tank 8. A supporting arm 9 is installed at the front end of the steel loading and unloading machine 10. This arm 9 can be moved horizontally and vertically between the pulley pairs, allowing the steel pipe to be removed from the chamber furnace 13 and placed on the pulley pairs. When implementing the present invention, the support arm 9 provided at the front end of the steel loading and unloading machine 10 removes the steel pipe from the chamber furnace 13. The steel pipe is supported by the support arm 9 of the steel loading and unloading machine and inserted into the gap between the wheel sets. The steel pipe is placed on the wheel set of the pipe-steel rotating device provided on the quenching lifting frame in the quenching tank. The steel pipe is supported by the wheel set and descends along with the quenching lifting frame 4 to 500 mm below the liquid level of the quenching tank for quenching the steel pipe. After the steel pipe is placed on the wheel set, the steel loading and unloading machine retreats and the support arm retreats outside the quenching tank. The steel pipe rotates with the wheel set in the water, reducing deformation of the steel pipe. It has the advantages of reasonable and compact structure, high-quality and efficient operation, low accident rate, and maintenance cost savings. It can be widely used in chamber furnace steel pipe quenching heat treatment.

Claims

1. An immersion type steel pipe quenching rotary mechanism, comprising a quenching lifting frame (4), a quenching water tank (8), a supporting arm (9), a steel loading and unloading machine (10), and a chamber furnace (13), characterized in that: A steel pipe rotating device is provided on the top of the quenching lifting frame (4), and the steel pipe rotating device is composed of a pair of wheels (1), a waterproof reducer (2), a bearing seat (3), a chain (5), a short shaft (6), a main shaft (7) and a sprocket. The short shaft (6) is fixedly mounted on the top support seat of the quenching lifting frame (4) through the bearing seat (3), the pair of wheels (1) is mounted on the short shaft (6), and a short shaft sprocket (12) is provided at one end of the short shaft (6). The main shaft (7) is fixedly mounted directly below the pair of wheels (1) provided on the top of the quenching lifting frame (4) through the bearing seat (3), and is provided at the corresponding position of the short shaft sprocket (12). A double-row sprocket (11) is provided at each end and connected by a chain (5). The waterproof reducer (2) is provided on one side of the quenching lifting frame (4) and is connected to the double-row sprocket (11) on one main shaft (7) through a motor sprocket to form a driving shaft. The other main shafts (7) are connected to the double-row sprockets (11) on two adjacent main shafts through a chain to form a passive shaft. The quenching lifting frame (4) can be automatically raised and lowered in the quenching water pool (8). A supporting arm (9) is provided at the front end of the steel loading and unloading machine (10). The supporting arm (9) can be translated and raised between the wheel sets to take the steel pipe out of the chamber furnace (13) and place it on the wheel set.

2. The submerged steel pipe quenching rotation mechanism according to claim 1, characterized in that: The steel pipe rotating device is composed of a pair of wheels (1), a waterproof reducer (2), a bearing seat (3), a chain (5), a short shaft (6), a main shaft (7) and a sprocket. A plurality of pairs of wheels (1) are arranged above each main shaft (7) to support a steel pipe, and each pair of wheels (1) is evenly spaced.

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