Roller way device for conveying long steel pipes

Abstract

The utility model discloses a roller way device for conveying long steel pipes, which comprises rows of steel pipes, the rows of steel pipes reach the tail end of a cooling bed, the rows of steel pipes are moved to a lower cooling bed wide roller way by a discharging arm and a rotating arm, the cooling bed wide roller way is supported by a roller way support and is divided into a plurality of sections, and the sections of the cooling bed wide roller way are connected with the discharging arm and the rotating arm. Each section is composed of a plurality of cooling bed wide roller ways arranged at intervals, the cooling bed wide roller ways are independently provided with control devices, each section is independently provided with control buttons for transmission control, the cooling bed wide roller ways are additionally provided with frequency conversion type air cooling systems, and the frequency conversion type air cooling systems cool the cooling bed wide roller ways and the control devices through compressed air. A cold metal detector is arranged between every two adjacent sections of the cooling bed wide roller way, a power supply of each section of the cooling bed wide roller way is controlled to be disconnected by an alternating current contactor, the model of the cold metal detector is a KHLRD2 metal detector, and the cold metal detector is electrically connected with a PLC (Programmable Logic Controller).

Description

Technical Field

[0001] The utility model belongs to the technical field of steel pipe transmission, and in particular relates to a roller device for transmitting long steel pipes. Background Art

[0002] In the production process of hot-rolled small-diameter seamless steel pipes in the prior art, the length of the steel pipe rolled by the tension-reduction machine process is long, generally up to about 80 meters, and then the steel pipe is cooled by the cooling bed equipment. When the steel pipe reaches the end of the cooling bed, the unloading arm and the rotating arm move the steel pipe to the wide roller of the lower cooling bed, and the wide roller rotates to transfer the rows of steel pipes to the pipe row saw for sawing. Due to the long length of the steel pipes on the lower cooling bed and the poor straightness of the steel pipes, the pipe bodies of the rows of steel pipes directly above the roller cannot all contact the upper surface of the roller, which results in that several rows of steel pipes cannot run at the same time, and the sawing requirements of the pipe row saw cannot be met, affecting production.

[0003] In order to reduce the failure rate of roller motors and increase their service life, the most effective measure is to reduce the ambient temperature of the rollers and roller motors. However, since the rollers are installed on the motor output shaft, water cooling is complicated to install and inconvenient for later use and maintenance.

[0004] In view of the above factors, a roller device for transmitting long steel pipes is specially designed. A roller is set above each roller bracket, and the radial cross-sectional area of ​​the roller is an elliptical roller. When the elliptical roller rotates, the turning radius increases, which improves both the production efficiency and the sizing rate of the steel pipe. The temperature of the roller and the surrounding environment is greatly reduced, and the service life is increased. It is worthy of reference and application in the metallurgical industry. Utility Model Content

[0005] The utility model aims to provide a roller device for transmitting long steel pipes to solve the problems raised in the above background technology.

[0006] The purpose of the utility model is achieved through the following technical solutions: a roller conveyor device for conveying long steel pipes, comprising rows of steel pipes, wherein the rows of steel pipes are moved to the wide roller conveyor of the lower cooling bed by a discharge arm and a rotary arm when the rows of steel pipes arrive at the end of the cooling bed, wherein the wide roller conveyor of the cooling bed is supported by a roller conveyor support, wherein the wide roller conveyor of the cooling bed is divided into a plurality of sections, wherein each section is composed of a plurality of intervals of the wide roller conveyor of the cooling bed, wherein the wide roller conveyor of the cooling bed is independently provided with a control device, wherein each section is independently provided with a control button connected to a PLC for transmission control;

[0007] A variable frequency air cooling system is added to the wide roller table of the cooling bed, and the variable frequency air cooling system cools the wide roller table of the cooling bed and the control device through compressed air.

[0008] Furthermore, a cold metal detector is arranged between each section of the wide roller of the cooling bed, and each section of the wide roller of the cooling bed is disconnected by an AC contactor to control the power supply.

[0009] Furthermore, the cold metal detector model adopts KHLRD2 metal detector, and the cold metal detector is electrically connected to the PLC controller. The cold metal detector detects a signal, transmits the signal to the PLC, and controls the operation of the control device through the PLC.

[0010] Furthermore, the control device includes a reduction motor and a coupling connected to the reduction motor, and the output end of the control device is connected to the wide roller table of the cooling bed.

[0011] Furthermore, the radial cross-sectional area of ​​the wide roller of the cooling bed is an elliptical roller, and the elliptical parameter of the wide roller of the cooling bed is that the value of the major axis 2a / 2b is 6 / 5 to 5 / 4.

[0012] Furthermore, the variable frequency duct air cooling system includes a main pipe and a fan room, the main pipe is led from the fan room, the main pipe is arranged along the roller support and extends to the input end of the cooling bed;

[0013] A plurality of branch pipes are led out from the main pipe, and the end of each branch pipe is directly facing the center of the wide roller table of the cooling bed opposite to the control device.

[0014] Furthermore, the variable frequency duct air cooling system adopts a temperature detector and a fan frequency conversion controller to detect the ambient temperature of the control device in real time, and feeds back the temperature detection information to the fan control system. The fan controls the output air volume through the fan frequency conversion controller.

[0015] Furthermore, the fan control system adopts a PLC control system, the temperature detector is electrically connected to the control device, the temperature detector is electrically connected to the fan frequency conversion controller through a connecting line, and the fan frequency conversion controller is electrically connected to the fan motor group.

[0016] A method for a roller conveyor device for conveying a long length of steel pipe comprises the following steps;

[0017] During operation, when the steel pipe reaches the end of the cooling bed, the unloading arm and the rotating arm move the steel pipe to the wide roller of the lower cooling bed. Since the radial cross-sectional area of ​​the wide roller is elliptical, the rotation radius of the elliptical roller is larger than that of the traditional circular roller with radial cross-sectional area. Even if the straightness of the row of steel pipes is not good, when the elliptical roller rotates, the pipe bodies of the row of steel pipes directly above the roller can contact the upper surface of the elliptical roller, and the row of steel pipes will reach the pipe row sawing machine for sawing at the same time, which improves the production efficiency and the sizing rate of steel pipes.

[0018] The cooling bed wide roller is divided into several sections, each section is composed of several intervals of the cooling bed wide roller, the cooling bed wide roller is independently provided with a control device, and then the signal is transmitted to the PLC, and then the control device is operated by the PLC;

[0019] A cold metal detector is added between each section of the cooling bed width roller. Each section is controlled by an AC contactor to disconnect the power supply. When the cold metal detector detects a signal, the signal is transmitted to the PLC, and then the AC contactor is controlled by the intermediate relay to control the operation of the roller motor.

[0020] The air cooling system is led from the fan room by a main pipe and extends to the input end of the cooling bed. Several small branches are led out from the main pipe, and compressed air cools the roller and the motor through each branch. According to the different specifications of the steel pipes produced on the production line, the ambient temperature of the roller motor is detected in real time, and the temperature detection information is fed back to the fan control system. The fan controls the output air volume through frequency conversion and speed regulation.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model arranges a roller above each roller support, and makes the radial cross-sectional area of ​​the roller into an elliptical roller. When the elliptical roller rotates, the turning radius increases, which improves the production efficiency and the sizing rate of the steel pipe. The temperature of the roller and the surrounding environment is greatly reduced, and the service life is increased. It is worthy of reference and application in the metallurgical industry.

[0023] The utility model is arranged along the roller support and extends to the input end of the cooling bed. A plurality of small branch pipes are led out from the main pipe, and compressed air cools the roller and the motor through the branch pipes.

[0024] The temperature of the environment around the roller table and the motor of the utility model is greatly reduced, and the service life of the roller table motor is greatly improved. The roller table air cooling technology is a good measure to solve the temperature reduction of equipment under specific working conditions, and it is worthy of reference and application in the metallurgical industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the wide roller table of the cooling bed of the utility model;

[0026] Figure 2 This is a schematic diagram of a sectional cooling bed wide roller table of the utility model;

[0027] Figure 3 This is a schematic diagram of the cooling bed wide roller and control device of the utility model;

[0028] Figure 4 This is a schematic diagram of the utility model variable frequency duct air cooling system;

[0029] Figure 5 It is a schematic diagram of the variable frequency duct air cooling system and PLC of the utility model. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] like Figure 1-5 As shown, a roller conveyor device for conveying long steel pipes comprises a row of steel pipes 1. When the row of steel pipes 1 arrives at the end of the cooling bed, the unloading arm and the rotating arm move the row of steel pipes 1 to the wide roller conveyor 2 of the lower cooling bed. The wide roller conveyor 2 of the cooling bed is supported by a roller conveyor support 3. The wide roller conveyor 2 of the cooling bed is divided into several sections, each section is composed of several intervals of the wide roller conveyor 2 of the cooling bed. The wide roller conveyor 2 of the cooling bed is independently provided with a control device 4, and each section is independently provided with a control button for transmission control;

[0034] A variable frequency air cooling system 5 is additionally provided at the cooling bed wide roller table 2, and the variable frequency air cooling system 5 cools the cooling bed wide roller table 2 and the control device 4 by compressed air.

[0035] In order to detect the signal through the cold metal detector in the use state, thereby prompting the operation of the control device, a cold metal detector 6 is arranged between each section of the cooling bed wide roller 2, and each section of the cooling bed wide roller 2 is controlled by an AC contactor to disconnect the power supply. The cold metal detector 6 adopts the KHLRD2 metal detector. The cold metal detector 6 is electrically connected to the PLC controller. The cold metal detector 6 detects the signal and transmits the signal to the PLC, and then controls the AC contactor (not shown in the prior art figure) through the intermediate relay to attract the control device to operate.

[0036] In order to facilitate the roller to rotate through the control device when in use, the control device 4 includes a reduction motor 4-1 and a coupling 4-2 connected to the reduction motor 4-1, and the output end of the control device 4 is connected to the cooling bed wide roller 2.

[0037] In order to increase the contact area during use and enable rows of steel pipes to reach the pipe row saw for sawing at the same time, the radial cross-sectional area of ​​the cooling bed wide roller 2 is an elliptical roller, and the elliptical parameter of the cooling bed wide roller 2 is a value of the major axis 2a / 2b of 6 / 5 to 5 / 4.

[0038] In order to reduce the failure rate of the roller motor and increase its service life when in use, the variable frequency air cooling system 5 includes a main pipe 5-1 and a fan room 5-2. The main pipe 5-1 is drawn from the fan room 5-2. The main pipe 5-1 is arranged along the roller support 3 and extends to the input end of the cooling bed.

[0039] A plurality of branch pipes 5-3 are led out from the main pipe 5-1, and the end of each branch pipe 5-3 faces the center of the wide roller table 2 of the cooling bed opposite to the control device 4.

[0040] In order to facilitate the air volume control through the fan frequency conversion controller when in use, the variable frequency duct air cooling system 5 includes a temperature detector 5-4 and a fan frequency conversion controller 5-5. The temperature detector 5-4 and the fan frequency conversion controller 5-5 detect the ambient temperature of the control device 4 in real time, and feed back the temperature detection information to the fan control system. The fan controls the output air volume through the fan frequency conversion controller 5-5.

[0041] The fan control system adopts a PLC control system, the temperature detector 5-4 is electrically connected to the control device 4, the temperature detector 5-4 is electrically connected to the fan frequency conversion controller 5-5 through a connecting line, and the fan frequency conversion controller 5-5 is electrically connected to the fan motor group 5-6.

[0042] A method for a roller conveyor device for conveying a long length of steel pipe comprises the following steps;

[0043] During operation, when the steel pipe reaches the end of the cooling bed, the unloading arm and the rotating arm move the steel pipe to the wide roller of the lower cooling bed. Since the radial cross-sectional area of ​​the wide roller is elliptical, the rotation radius of the elliptical roller is larger than that of the traditional circular roller with radial cross-sectional area. Even if the straightness of the row of steel pipes is not good, when the elliptical roller rotates, the pipe bodies of the row of steel pipes directly above the roller can contact the upper surface of the elliptical roller, and the row of steel pipes will reach the pipe row sawing machine for sawing at the same time, which improves the production efficiency and the sizing rate of steel pipes.

[0044] The cooling bed wide roller is divided into several sections, each section is composed of several intervals of the cooling bed wide roller, the cooling bed wide roller is independently provided with a control device, and each section is independently provided with a control button connected to the PLC for transmission control;

[0045] When the cooling bed output roller is in single motion, each section has a control button; when in linkage, the two sections are controlled by the same control button (not shown in the figure).

[0046] A cold metal detector is added between each section of the cooling bed width roller. Each section is controlled by an AC contactor to disconnect the power supply. When the cold metal detector detects a signal, the signal is transmitted to the PLC, and then the control device is operated through the PLC;

[0047] The air cooling system is led from the fan room by a main pipe and extends to the input end of the cooling bed. Several small branch pipes are led out from the main pipe. The end of each branch pipe faces the center of the roller table opposite the roller motor. Compressed air cools the roller table and the motor through each branch pipe. According to the different specifications of steel pipes produced on the production line, the ambient temperature of the roller table motor is detected in real time, and the temperature detection information is fed back to the fan control system. The fan controls the output air volume through frequency conversion speed regulation.

[0048] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A roller conveyor device for conveying long steel pipes, comprising a row of steel pipes (1), wherein the row of steel pipes (1) arrives at the end of a cooling bed and is moved to a wide roller conveyor (2) of a lower cooling bed by a discharge arm and a rotary arm, characterized in that: The cooling bed wide roller conveyor (2) is supported by a roller conveyor support (3), the cooling bed wide roller conveyor (2) is divided into a plurality of sections, each section is composed of a plurality of intervals of the cooling bed wide roller conveyor (2), the cooling bed wide roller conveyor (2) is independently provided with a control device (4), and each section is independently provided with a control button connected to a PLC for transmission control; A variable frequency air cooling system (5) is added to the wide roller conveyor (2) of the cooling bed. The variable frequency air cooling system (5) cools the wide roller conveyor (2) of the cooling bed and the control device (4) by compressed air.

2. The roller conveyor device for conveying long steel pipes according to claim 1, characterized in that: A cold metal detector (6) is arranged between each section of the cooling bed wide roller conveyor (2), and each section of the cooling bed wide roller conveyor (2) is controlled by an AC contactor to disconnect the power supply.

3. The roller conveyor device for conveying long steel pipes according to claim 2, characterized in that: The cold metal detector (6) is a KHLRD2 metal detector. The cold metal detector (6) is electrically connected to a PLC controller. The cold metal detector (6) detects a signal and transmits the signal to the PLC, and the control device (4) is controlled by the PLC to operate.

4. The roller conveyor device for conveying long steel pipes according to claim 3 is characterized in that: The control device (4) comprises a reduction motor (4-1) and a coupling (4-2) connected to the reduction motor (4-1), and an output end of the control device (4) is connected to the cooling bed wide roller table (2).

5. The roller conveyor device for conveying long steel pipes according to claim 4, characterized in that: The radial cross-sectional area of ​​the wide roller conveyor (2) of the cooling bed is an elliptical roller conveyor, and the elliptical parameter of the wide roller conveyor (2) of the cooling bed is a value of the major axis 2a / 2b of 6 / 5 to 5 / 4.

6. The roller conveyor device for conveying long steel pipes according to claim 5, characterized in that: The variable frequency air cooling system (5) comprises a main pipe (5-1) and a fan room (5-2), wherein the main pipe (5-1) is led from the fan room (5-2), and the main pipe (5-1) is arranged along the roller support (3) and extends to the input end of the cooling bed; A plurality of branch pipes (5-3) are led out from the main pipe (5-1), and the end of each branch pipe (5-3) faces the center of the wide roller conveyor (2) of the cooling bed opposite the control device (4).

7. The roller conveyor device for conveying long steel pipes according to claim 6, characterized in that: The variable frequency duct air cooling system (5) also includes a temperature detector (5-4) and a fan variable frequency controller (5-5), which detect the ambient temperature of the control device (4) in real time through the temperature detector (5-4) and the fan variable frequency controller (5-5), feed back the temperature detection information to the fan control system, and the fan speed is adjusted by the fan variable frequency controller (5-5) to control the output air volume.

8. The roller conveyor device for conveying long steel pipes according to claim 7, characterized in that: The fan control system adopts a PLC control system, the temperature detector (5-4) is electrically connected to the control device (4), the temperature detector (5-4) is electrically connected to the fan frequency conversion controller (5-5) through a connecting line, and the fan frequency conversion controller (5-5) is electrically connected to the fan motor group (5-6).

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