A large-scale ingot sawing device and its sawing method

Abstract

The present invention relates to a sawing device for large-sized steel ingots and a sawing method thereof. The sawing device comprises a conveying roller table (1), two lifting supporting wheels (2) are arranged at the rear section of the conveying roller table (1), a power chuck (3) is arranged between the two lifting supporting wheels (2) at the front and rear, and a grinding wheel saw (4) is arranged behind the conveying roller table (1). The sawing device for large-sized steel ingots and the sawing method thereof according to the present invention adopt a grinding wheel sawing method and can be used for sawing steel ingots or billets with a diameter larger than Φ400.

Description

Technical Field

[0001] The present invention relates to a sawing device for large-sized steel ingots and a sawing method thereof, which are mainly used in iron and steel enterprises and belong to the technical field of metallurgical machinery. Background Art

[0002] The manufacturing capacity of large-sized alloy ingots and castings is one of the important symbols to measure a country's industrial level. With the construction of a large number of large-scale infrastructure projects in China, such steel ingots are widely used in the fields of electric power, shipbuilding, iron and steel, etc.

[0003] A steel ingot generally consists of a riser, an ingot body, and an ingot tail. The ingot body is the main body of the steel ingot. In subsequent production, it is necessary to cut off a small part of the riser end and the ingot tail, and the subsequent ingot body may also need to be cut.

[0004] Most of the materials of steel ingots are alloy materials, and the strength and hardness of the materials are relatively high. At present, the methods of gas cutting, band saw cutting, and abrasive wheel saw cutting are mainly used. The gas cutting method has simple equipment and is convenient for operation, but the cutting surface is not flat, it is not suitable for cutting high-alloy and non-ferrous metals, has low precision, low production efficiency, large metal loss at the port, poor working conditions, and high requirements for operation. The band saw cutting has a flat end face and low equipment investment, but the efficiency is relatively low. Due to the limitations of the saw blade and the equipment power specifications, the abrasive wheel saw generally cannot cut through a steel ingot with a diameter of more than Φ400 - 500 at one time. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sawing device for large-sized steel ingots and a sawing method thereof according to the above-mentioned prior art. By using the abrasive wheel sawing method, it can be used to cut steel ingots or billets with a diameter greater than Φ400.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: A sawing device for large-sized steel ingots includes a conveying roller table. There are two lifting supporting wheels arranged front and rear at the rear section of the conveying roller table. A power chuck is arranged between the two lifting supporting wheels. A grinding wheel saw is arranged behind the conveying roller table.

[0007] Optionally, the conveying roller table includes a plurality of conveying rollers arranged at intervals front and rear. The conveying roller includes a base. There are two bearing seats arranged left and right on the base. A V-shaped roller body is arranged between the two bearing seats on the left and right. A roller table reducer is arranged on one side of the V-shaped roller body. The output end of the roller table reducer is connected to the V-shaped roller body.

[0008] Optionally, the lifting supporting wheel includes two guide plates arranged parallel to each other front and rear. A support plate is arranged between the middle parts of the two guide plates front and rear. A lifting hydraulic cylinder is arranged on the support plate. The upper end of the lifting hydraulic cylinder is connected with a supporting wheel frame. There are two supporting wheels arranged left and right on the supporting wheel frame.

[0009] Optionally, a guide groove is vertically provided on the inner side of the guide plate. A guide wheel shaft is installed on the supporting wheel frame in the front-back direction. Guide wheels are provided at both the front and rear ends of the guide wheel shaft, and the front and rear guide wheels are respectively arranged in the guide grooves on the inner sides of the front and rear guide plates.

[0010] Optionally, the supporting wheel includes a support, a supporting wheel shaft is clamped on the support, and a supporting wheel body is provided on the supporting wheel shaft.

[0011] Optionally, a displacement sensor is built in the lifting hydraulic cylinder.

[0012] Optionally, the power chuck includes a chuck seat, a rotating gear ring and a planar locking gear ring are provided on the chuck seat. The rotating gear ring and the planar locking gear ring are arranged front and back. A plurality of jaws are uniformly arranged along the radial direction on the rotating gear ring.

[0013] Optionally, a rotating drive motor is provided on the chuck seat, and the output end of the rotating drive motor meshes with the rotating gear ring.

[0014] Optionally, a locking drive motor is further provided on the chuck seat. The output end of the locking drive motor meshes with the planar locking gear ring, and the planar locking gear ring cooperates with a plurality of jaws.

[0015] A sawing method for a large-sized ingot sawing device, the method includes the following steps:

[0016] The traveling crane hoists the ingot onto the conveying roller table. The conveying roller table conveys the ingot to below the saw blade of the abrasive wheel saw. The lifting supporting wheels lift the ingot according to the specifications of the ingot until the center line of the ingot coincides with the center line of the power chuck. The power chuck automatically centers and clamps the ingot. The abrasive wheel saw saws down the first cut until it cuts to the center line of the ingot. After retracting the saw, the power chuck rotates 120° to the left. The abrasive wheel saw saws the second cut to the center line of the ingot. After retracting the saw, the power chuck rotates 240° to the right. The abrasive wheel saw saws again to saw off the ingot.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] 1. The present invention adopts the abrasive wheel sawing method and can be used to cut ingots or billets with a diameter greater than Φ400.

[0019] 2. The structure of the present invention is simple, the operation is convenient, the sawing surface is flat, the sawing accuracy is high, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a large-sized ingot sawing device of the present invention.

[0021] Figure 2 is Figure 1 the top view of.

[0022] Figure 3 Side view of Figure 1 .

[0023] Figure 4 is Figure 1 Schematic structural view of the lifting supporting roller in

[0024] Figure 5 Side view of Figure 4 .

[0025] Figure 6 is Figure 1 Schematic structural view of the power chuck in

[0026] Figure 7 Schematic view of multiple saw cuts of a large - scale ingot sawing device of the present invention.

[0027] Wherein:

[0028] Conveyor roller path 1

[0029] Conveyor roller 11

[0030] Base 111

[0031] Bearing seat 112

[0032] V - shaped roller body 113

[0033] Roller path speed reducer 114

[0034] Support roller shaft 115

[0035] Lifting supporting roller 2

[0036] Guide plate 21

[0037] Support plate 22

[0038] Lifting hydraulic cylinder 23

[0039] Supporting roller frame 24

[0040] Supporting roller 25

[0041] Support 251

[0042] Supporting roller shaft 252

[0043] Supporting roller body 253

[0044] Guide groove 26

[0045] Guide wheel shaft 27

[0046] Guide wheel 28

[0047] Displacement sensor 29

[0048] Power chuck 3

[0049] Chuck base 31

[0050] Rotary gear ring 32

[0051] Planar locking gear ring 33

[0052] Jaw 34

[0053] Rotary drive motor 35

[0054] Locking drive motor 36

[0055] Card slot 37

[0056] Grinding wheel saw 4

[0057] Ingot 5. Specific implementation mode

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0059] See Figures 1 to 7 , a large - specification ingot sawing device related to the present invention, which includes a conveying roller table 1. There are two front - and - rear lifting supporting wheels 2 arranged at the rear section of the conveying roller table 1. A power chuck 3 is arranged between the two front - and - rear lifting supporting wheels 2. A grinding wheel saw 4 is arranged behind the conveying roller table 1;

[0060] The conveying roller table 1 includes a plurality of conveying rollers 11 arranged at intervals in the front - and - rear direction. The conveying roller 11 includes a base 111. There are two left - and - right bearing seats 112 arranged on the base 111. A V - shaped roller body 113 is arranged between the two left - and - right bearing seats 112. A roller - way speed reducer 114 is arranged on one side of the V - shaped roller body 113. The output end of the roller - way speed reducer 114 is connected to the V - shaped roller body 113;

[0061] Support roller shafts 115 are arranged at the left and right ends of the V - shaped roller body 113. The two left - and - right support roller shafts 115 are respectively inserted into the two left - and - right bearing seats 112;

[0062] The output end of the roller - way speed reducer 114 is connected to one of the support roller shafts 115 through a drum - tooth coupling;

[0063] A self - aligning roller bearing is arranged in the bearing seat 112;

[0064] The bearing seat 112 and the roller - way speed reducer 114 are fixed to the base 111 through bolts;

[0065] The lifting supporting wheel 2 includes two guide plates 21 arranged in parallel in the front - and - rear direction. A support plate 22 is arranged between the middle parts of the two front - and - rear guide plates 21. A lifting hydraulic cylinder 23 is arranged on the support plate 22. The upper end of the lifting hydraulic cylinder 23 is connected with a support wheel frame 24. Two left - and - right support wheels 25 are arranged on the support wheel frame 24;

[0066] A guide groove 26 is vertically arranged along the inner side of the guide plate 21. A guide wheel shaft 27 is installed through the support wheel frame 24 in the front-back direction. Guide wheels 28 are arranged at both the front and rear ends of the guide wheel shaft 27. The front and rear guide wheels 28 are respectively arranged in the guide grooves 26 on the inner sides of the front and rear guide plates 21.

[0067] Two guide grooves 26 are vertically arranged along the inner side of each guide plate 21, and the two guide grooves 26 are arranged in parallel left and right.

[0068] The supporting wheel 25 includes a support 251. A supporting wheel shaft 252 is clamped on the support 251. A supporting wheel body 253 is arranged on the supporting wheel shaft 252, and a bearing is arranged in the supporting wheel body 253.

[0069] The lifting hydraulic cylinder 23 is connected to the support wheel frame 24 through a spherical plain bearing.

[0070] A displacement sensor 29 is arranged inside the lifting hydraulic cylinder 23, and the lifting stroke of the lifting hydraulic cylinder is accurately controlled by the data of the displacement sensor.

[0071] The power chuck 3 includes a chuck seat 31. A rotating gear ring 32 and a flat locking gear ring 33 are arranged on the chuck seat 31. The rotating gear ring 32 and the flat locking gear ring 33 are arranged front and back. A plurality of jaws 34 are uniformly arranged along the radial direction on the rotating gear ring 32.

[0072] A rotary drive motor 35 is arranged on the chuck seat 31. The output end of the rotary drive motor 35 meshes with the rotating gear ring 32. The rotating gear ring 32 is driven by the rotary drive motor to realize a rotary motion, and the rotation angle is controlled by an encoder.

[0073] A locking drive motor 36 is also arranged on the chuck seat 3. The output end of the locking drive motor 36 meshes with the flat locking gear ring 33. The flat locking gear ring 33 cooperates with a plurality of jaws 34. The locking drive motor 36 drives the flat locking gear ring 33 to realize a rotary motion, and the flat locking gear ring 33 drives a plurality of jaws to contract inward simultaneously to clamp the ingot.

[0074] A plurality of card slots 37 are radially formed on the rotating gear ring 32, and the jaws 34 are arranged in the card slots 37.

[0075] Its sawing method is as follows:

[0076] The traveling crane hoists the ingot onto the conveying roller table. The conveying roller table transports the ingot to the position below the saw blade of the abrasive wheel saw. The lifting supporting wheels lift the ingot according to the specifications of the ingot until the center line of the ingot coincides with the center line of the power chuck. The power chuck automatically centers and clamps the ingot. The abrasive wheel saw saws down the first cut until it cuts to the center line of the ingot. After retracting the saw, the power chuck rotates 120° counterclockwise. The abrasive wheel saw saws the second cut to the center line of the ingot. After retracting the saw, the power chuck rotates 240° clockwise. The abrasive wheel saw saws again to cut off the ingot.

[0077] In addition to the above embodiments, the present invention also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present invention.

Claims

1. A sawing method for a sawing device of large-sized steel ingots, characterized in that: The sawing device includes a conveying roller table. There are two lifting supporting wheels arranged front and back at the rear section of the conveying roller table. A power chuck is arranged between the two lifting supporting wheels front and back. A grinding wheel saw is arranged behind the conveying roller table. The conveying roller table includes a plurality of conveying rollers arranged at intervals front and back. Each conveying roller includes a base. There are two bearing seats arranged left and right on the base. A V-shaped roller body is arranged between the two bearing seats left and right. A roller table speed reducer is arranged on one side of the V-shaped roller body. The output end of the roller table speed reducer is connected to the V-shaped roller body. The lifting supporting wheel includes two guide plates arranged parallel front and back. A support plate is arranged between the middle parts of the two guide plates front and back. A lifting hydraulic cylinder is arranged on the support plate. The upper end of the lifting hydraulic cylinder is connected with a supporting wheel frame. There are two supporting wheels arranged left and right on the supporting wheel frame. Guide grooves are arranged vertically on the inner sides of the guide plates. A guide wheel shaft is arranged through the supporting wheel frame in the front-back direction. Guide wheels are arranged at both the front and rear ends of the guide wheel shaft. The two guide wheels front and back are respectively arranged in the guide grooves on the inner sides of the two guide plates front and back. The power chuck includes a chuck seat. A rotating gear ring and a planar locking gear ring are arranged on the chuck seat. The rotating gear ring and the planar locking gear ring are arranged front and back. A plurality of jaws are arranged uniformly along the radial direction on the rotating gear ring. A rotating drive motor is arranged on the chuck seat. The output end of the rotating drive motor meshes with the rotating gear ring. A locking drive motor is also arranged on the chuck seat. The output end of the locking drive motor meshes with the planar locking gear ring. The planar locking gear ring cooperates with the plurality of jaws. The crane hoists the ingot onto the conveying roller table. The conveying roller table conveys the ingot to below the sawing opening of the grinding wheel saw. The lifting supporting wheel lifts the ingot according to the specification of the ingot until the center line of the ingot coincides with the center line of the power chuck. The power chuck automatically centers and clamps the ingot. The grinding wheel saw saws down the first cut until it cuts to the center line of the ingot. After retracting the saw, the power chuck rotates 120° to the left. The grinding wheel saw saws the second cut to the center line of the ingot. After retracting the saw, the power chuck rotates 240° to the right. The grinding wheel saw saws again to saw off the ingot.

2. The sawing method for a sawing device of large-sized steel ingots according to claim 1, characterized in that: The supporting wheel includes a support. A supporting wheel shaft is clamped on the support. A supporting wheel body is arranged on the supporting wheel shaft.

3. The sawing method for a sawing device of large-sized steel ingots according to claim 1, characterized in that: A displacement sensor is arranged inside the lifting hydraulic cylinder.

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