Medium plate gas cutting device

Abstract

The utility model discloses a medium-thickness plate gas cutting device which comprises a base, the base comprises a supporting table and a supporting column, a plurality of carrier rollers which are evenly distributed are arranged on the upper surface of the supporting table, and connecting plates are arranged between the carrier rollers; the semi-automatic gas cutting machine is arranged above one side of the supporting table, and a movable sliding rail is arranged below the semi-automatic gas cutting machine; the driving assembly is arranged below the supporting table, the driving assembly drives the carrier rollers to rotate so as to drive the plates to move, and the driving assembly adopts variable-frequency driving; and the material containing groove is separably formed in the outer side of the base, and a plate sliding rail is further arranged above the material containing groove. Through automatic positioning gas cutting, the tedious process of scribing before gas cutting is reduced, the device is simple in structure, convenient to operate, safe and practical, the cost is greatly reduced, the gas cutting machining speed is high, the quality is qualified, the labor intensity of operators is greatly reduced, and the production requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of plate gas cutting equipment, in particular to a medium and thick plate gas cutting device. Background Art

[0002] During the process of the iron ore mixture required for blast furnace production descending from the top of the furnace, it is heated, reduced, melted, and slagged, and a series of complex physical and chemical reactions need to occur. Finally, liquid slag and molten iron are generated, gathered in the hearth, and periodically discharged from the furnace through the slag notch and the taphole. When tapping the blast furnace at the taphole, an opening machine is required to open the taphole for tapping; its working principle is to drive the drill rod in front to rotate through the rotation of the opening machine, so as to achieve the functions of opening and dredging the taphole. The length of the drill rod is 4.6 m, the rear end is fixed on the driving device of the opening machine, and there is a support at the front end to accurately align with the taphole; and the hanging ring is the key component to support the drill rod to align with the taphole and open and dredge the taphole.

[0003] The hanging ring is located in front of the opening machine. Due to the splashing of molten iron when opening and dredging the taphole, the hanging ring and the drill rod are severely damaged by molten iron, and the replacement frequency is very high, belonging to high-consumption spare parts. According to statistics, the three blast furnaces in the ironmaking plant use 60 hanging rings and drill rods on average every day (24 hours), and 21,900 hanging rings are consumed in a year. According to the actual production needs, as Figure 1 shown, the hanging ring of the blast furnace front opening machine is made of two specifications of plates and pipe rings with a thickness of 20 mm and sizes of 50 mm×50 mm and 80 mm×50 mm cut by gas cutting. And the current bottleneck in the production of the hanging ring is the gas cutting process of the hanging plates; in the traditional gas cutting method, the gas cutting of the steel plate is purely manual oxygen-acetylene gas cutting, which has a huge gas cutting amount, long time, high labor intensity, and high processing labor cost.

[0004] Based on the actual situation of on-site gas cutting of medium and thick plates for hanging, aiming at the technical key points in the process of gas cutting the hanging plates, there is an urgent need for an efficient and safe gas cutting device to improve the operation efficiency of gas cutting medium and thick plates into plates, so as to reduce the labor intensity of operators and ensure the gas cutting quality of the plates. Content of the Utility Model

[0005] The medium and thick plate gas cutting device of the utility model reduces the cumbersome process of scribing before gas cutting through automatic positioning gas cutting. The device has a simple structure, is easy to operate, is safe and practical, greatly reduces the cost, has a fast gas cutting processing speed, qualified quality, and greatly reduces the labor intensity of operators, meeting the production needs.

[0006] According to one aspect of the utility model, a medium and thick plate gas cutting device is provided, which includes:

[0007] Base, the base includes a support table and support columns. A plurality of evenly distributed idler rollers are arranged on the upper surface of the support table, and connecting plates are arranged between the idler rollers;

[0008] Semi-automatic gas cutting machine, the semi-automatic gas cutting machine is arranged above one side of the support table, and a movable slide rail is arranged below the semi-automatic gas cutting machine;

[0009] Drive assembly, the drive assembly is arranged below the support table, and the drive assembly drives the idler rollers to rotate so as to drive the sheet to move. The drive assembly adopts variable frequency drive; and

[0010] Hopper trough, the hopper trough is detachably arranged outside the base, and a sheet slide rail is also arranged above the hopper trough.

[0011] According to an embodiment of the present invention, the upper surface of the connecting plate is 10 - 30 mm lower than the upper surface of the idler roller.

[0012] According to an embodiment of the present invention, the drive assembly includes a gear motor.

[0013] According to an embodiment of the present invention, a transmission chain is further included. Idler gears are arranged on the idler rollers, and the transmission chain meshes with the idler gears and the gear motor.

[0014] According to an embodiment of the present invention, tensioning gears are arranged between the idler rollers.

[0015] According to an embodiment of the present invention, a slag and scrap iron hopper is further included, and wheels are arranged at the bottom of the slag and scrap iron hopper.

[0016] According to an embodiment of the present invention, a positioning baffle is further included, and the positioning baffle is vertically arranged above the support table and is used for positioning the sheet.

[0017] According to an embodiment of the present invention, a waste trough is further included, and the waste trough is arranged below the support table.

[0018] According to an embodiment of the present invention, the medium - thick plate gas cutting device includes a plurality of hopper troughs arranged along the moving direction of the sheet and further includes multiple groups of sheet slide rails, wherein different groups of sheet slide rails are used to guide the cut sheets of different specifications to different hopper troughs.

[0019] According to an embodiment of the present invention, the number of idler rollers is 8, and idler gears are installed on 4 of them; protection grooves are arranged on the transmission chain and the idler gears.

[0020] Through the above technical solutions, the medium - thick plate gas cutting device provided by the present invention reduces the cumbersome procedures of scribing before gas cutting through automatic positioning gas cutting. The device has a simple structure, is convenient to operate, is safe and practical, greatly reduces the cost, has a fast gas cutting processing speed, qualified quality, and greatly reduces the labor intensity of the operators, meeting the production needs. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic diagram of the front-end support hanging ring of the drilling-through rod in the prior art;

[0023] Figure 2 is a schematic structural diagram of the medium-thick plate gas cutting device disclosed by the present utility model;

[0024] Figure 3 is a top view of the medium-thick plate gas cutting device disclosed by the present utility model.

[0025] Description of the Reference Numerals:

[0026] 1, support table; 2, support column; 3, idler roller; 4, connecting plate; 5, semi-automatic gas cutting machine; 6, driving assembly; 7, material hopper; 8, transmission chain; 9, tensioning gear; 10, waste chute; 11, positioning baffle; 12, plate slide rail. Detailed Embodiments

[0027] The following will further describe in detail the embodiments of the present utility model in conjunction with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present utility model, but cannot be used to limit the scope of the present utility model. The present utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.

[0028] The present utility model provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values described in these embodiments should be interpreted as merely exemplary, rather than as limitations.

[0029] It should be noted that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0030] In addition, the "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "comprising" or "including" mean that the elements before this word are covered by the elements listed after this word, and do not exclude the possibility of also covering other elements.

[0031] It should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected" and "coupled" 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 those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0032] All terms used in the present utility model have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0033] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, these technologies, methods and devices should be regarded as part of the specification.

[0034] Such as Figure 2 and 3As shown in the figure, the utility model provides a medium-thick plate gas cutting device, which includes a base. The base includes a support table 1 and support columns 2. The upper surface of the support table 1 is provided with a number of evenly distributed idler rollers 3. A connecting plate 4 is arranged between the idler rollers 3. The base constitutes the basic support structure of the device. The base is made of unequal-angle steel (specification 160*100*12mm) and iron plate. The size of the base is 6.45m in length, 2.1m in width and 900mm in height; a semi-automatic gas cutting machine 5 is arranged above one side of the support table 1. An activity slide rail is arranged below the semi-automatic gas cutting machine 5. The semi-automatic gas cutting machine 5 can move along the activity slide rail to realize gas cutting of the medium-thick plate; a driving component 6 is arranged below the support table 1. The driving component 6 drives the idler rollers 3 to rotate so as to drive the plate to move. The driving component 6 adopts frequency conversion drive. By controlling the moving speed and moving distance of the plate through the driving component 6, the cutting position of the plate each time can be automatically determined, so as to cut the plate with the required width; and a material receiving trough 7 is detachably arranged outside the base. A plate slide rail 12 is also arranged above the material receiving trough 7. The cut plate slides to the corresponding material receiving trough through the plate slide rail 12.

[0035] In some embodiments, the medium-thick plate gas cutting device includes a plurality of material receiving troughs 7 arranged along the moving direction of the plate and also includes multiple groups of plate slide rails 12. Different groups of plate slide rails 12 enable the cut plates of different specifications to slide into different material receiving troughs 7, saving the time for collecting and classifying the plates. For example, two material receiving troughs 7 and two groups of plate slide rails 12 can be set. Each group of plate slide rails 12 can include two steel pipes arranged oppositely. The two groups of plate slide rails 12 are connected in sequence. The plate slide rail 12 close to the base can be inclined and its end is located at the material receiving trough 7 close to the base, which is used to guide the cut plate to the material receiving trough 7 close to the base. The plate slide rail 12 far from the base is connected to the plate slide rail 12 close to the base and its end is located at the material receiving trough 7 far from the base, which is used to further guide the cut plate to the material receiving trough 7 far from the base. The two groups of plate slide rails 12 are detachably connected. By removing the plate slide rail 12 far from the base, the cut plate can be guided to the material receiving trough 7 close to the base. By installing the plate slide rail 12 far from the base, the cut plate can be guided to the material receiving trough 7 far from the base.

[0036] The connecting plate 4 is fixed between the idler rollers 3 by welding, thereby enhancing the strength of the gas cutting device.

[0037] In some specific embodiments, the upper surface of the connecting plate 4 is 10-30mm lower than the upper surface of the idler roller 3, so as to avoid direct contact between the steel plate and the connecting plate 4, and further reduce the driving resistance caused by the increase in friction. Preferably, the upper surface of the connecting plate 4 is 20mm lower than the upper surface of the idler roller 3. The size of the connecting plate 4 is 500mm in width.

[0038] In some specific embodiments, the number of the material hopper grooves 7 is set to be multiple, and plates of different sizes are respectively placed in different material hopper grooves 7. After the operation is completed, no additional classification is required, which saves time and effort.

[0039] In some specific embodiments, the driving assembly 6 includes a gear motor. The gear motor changes the output torque and speed through a gear transmission system by using the tooth number ratio of the gears. By increasing the diameter of the gear on the driving shaft, the gear motor can convert the input low-torque high-speed motion into the output high-torque low-speed motion. The gear reduction motor organically combines the gear reducer and the motor to form a compact, efficient and reliable power transmission system. Compared with the traditional configuration where the motor and the reducer are separated, the integrated design greatly saves the installation space and makes the whole equipment more compact and portable.

[0040] In some specific embodiments, a transmission chain 8 is further included. A roller gear is arranged on the roller 3, and the transmission chain 8 meshes with the roller gear and the gear motor. Thus, the gear motor drives the transmission chain 8, and further drives the roller 3 to rotate, so that the plate on the roller 3 rotates to a proper position for gas cutting.

[0041] In some specific embodiments, a tensioning gear 9 is arranged between the rollers 3. The tensioning gear 9 can accurately adjust the tension of transmission components such as belts and chains. Appropriate tension can reduce the energy loss during the transmission process and improve the transmission efficiency. By ensuring the close contact between the transmission components, the tensioning gear 9 reduces the energy waste caused by sliding friction, thus making the whole transmission system more efficient.

[0042] In some specific embodiments, a slag and scrap iron bucket is further included. Wheels are arranged at the bottom of the slag and scrap iron bucket. When receiving materials, the slag and scrap iron bucket is placed under the semi-automatic gas cutting machine 5 to receive slag and scrap iron. After gas cutting, the trolley is pulled out and the scrap iron is poured into the scrap iron stacking area.

[0043] In some specific embodiments, a positioning baffle 11 is further included. The positioning baffle 11 is vertically arranged above the support table 1 and is used for positioning the plate. By means of the positioning baffle 11, a 50-mm gap is ensured between the plate and the frame beam of the semi-automatic gas cutting machine, so as to avoid the bending deformation of the plate during the gas cutting process, which may cause the whole steel plate to move backward.

[0044] In some specific embodiments, a waste material groove 10 is further included. The waste material groove 10 is arranged under the support table 1. The waste material groove 10 can centrally collect the waste materials generated during the gas cutting process, such as metal chips and cut-off corner materials, etc., avoiding the scattering of waste materials and the problem of difficult cleaning. The use of the waste material groove 10 makes the working area cleaner and more orderly, and reduces the pollution and damage of waste materials to the equipment and tools.

[0045] In some specific embodiments, the number of idler rollers 3 is 8, among which 4 are equipped with idler roller gears, and the other 4 can be unpowered idler rollers, which is beneficial to saving power.

[0046] Specifically, a plurality of idler rollers 3 are sequentially named the first idler roller 3, the second idler roller 3,..., the eighth idler roller 3 in the direction gradually away from the semi-automatic gas cutting machine 5, and the tensioning gear 9 is arranged between the second idler roller 3 and the third idler roller 3, so as to ensure that the idler rollers 3 can run synchronously.

[0047] In some specific embodiments, protective grooves are provided on the transmission chain 8 and the idler roller gears. Specifically, the protective grooves are made of channel steel, so as to play a role in horizontal positioning of the steel plate and protect the transmission chain 8, the sprocket and the bearings of the idler rollers 3 from being damaged.

[0048] In this application, the driving motor is selected with the model: YBX3-100L1-4; power: 2.2kW; speed: 1420r / min, and a frequency converter (model: ACS800-XX) is used to realize the speed regulation function. The operation of the device is controlled in two places. One is the control by the operation box, which is convenient for maintenance and operation. The other is the remote control by the operation handle, which is convenient for starting and stopping the equipment in time and is conducive to operation. An operation box and a remote selection switch are set, and only one place can operate at the same time. The speed regulation function is set at the operation box.

[0049] A specific application of this application is as follows: A chain drive device composed of idler rollers 3, a transmission chain 8 and a gear motor drives the sheet metal to move forward. When it reaches below the semi-automatic gas cutting machine 5, the movable slide rail of the semi-automatic gas cutting machine 5 is fixed on the base, and the semi-automatic gas cutting machine 5 moves on the movable slide rail to realize gas cutting of medium-thick plates. Since the widths of the sheet metals are different, the position of the slide rail of the semi-automatic gas cutting machine 5 needs to be adjusted according to the actual situation. Therefore, the driving assembly 6 adopts variable-frequency drive to realize the function of adjusting the forward speed of the sheet metal. The overall design of the device is a cuboid structure. 8 idler rollers 3 are arranged on the upper part, among which 4 are equipped with idler roller gears. The transmission chain 8 is hung on the idler roller gears, and the driving assembly 6 is installed in the middle and lower part of the base. The gear motor runs to drive the idler rollers 3 connected by the transmission chain 8 to rotate, so as to drive the sheet metal thereon to move forward.

[0050] The medium-thick plate gas cutting device provided by the present utility model can reduce the gas cutting difficulty. Through automatic positioning gas cutting, the cumbersome process of scribing before gas cutting is reduced; when using the semi-automatic gas cutting device of this application to cut sheet metal, the production quantity of hanging gas cutting is increased from 75 per (day·person) before improvement to 348 per (day·person), and the efficiency is greatly improved; the harm to human health caused by gas cutting is reduced. The operator does not need to operate the gas welding torch, reducing the risk of harm such as eye injury, skin burn injury, hearing damage injury, and respiratory disease injury to personnel; on the premise of the same total amount, the production time of hanging spare parts is shortened, the labor intensity of personnel is reduced, and the work efficiency of maintenance workers is improved.

[0051] In the spare part manufacturing process, a steel plate with dimensions of 20mm×1250 mm ×6000 mm needs to be gas cut into two plates with dimensions of 50mm×50mm and 80mm×50mm for manufacturing the hanging device of the taphole drill. In the original gas cutting method of the steel plate, only 150 pieces could be gas cut and manufactured by 2 people per day. After using the gas cutting device of this application, 348 pieces can be cut and manufactured by 1 person per day. Currently, three blast furnaces in the ironmaking plant consume 60 pieces per day on average, and 21,900 pieces are consumed in a year. Converted into gas cutting manufacturing time: before improvement, it was 21900 / 150×8 = 1168 hours, and after improvement, it was 21900 / 348×8 = 503 hours (calculated based on 8 hours per day). The benefits created are as follows:

[0052] 1. Benefits created by reducing the number of equipment repairs (reducing gas cutting manufacturing time)

[0053] According to the formula: Benefit from reducing the number of equipment repairs = (Total repair cost under the pre - implementation repair mode - Total repair cost under the post - implementation repair mode) × Technical contribution coefficient - R & D investment

[0054] The manufacturing cost of this hanging device is mainly labor cost. According to the repair labor cost of 59.88 yuan per person•hour, then

[0055] Before improvement, the repair cost: S1 = 1168×2×59.88 = 139,800 yuan

[0056] After improvement, the repair cost: S2 = 503×1×59.88 = 30,100 yuan

[0057] Taking the technical contribution coefficient as 0.9 and the equipment R & D investment as 35,000 yuan, the annual reduction in labor cost is:

[0058] S3 = (S1 - S2)×0.9 - 3.5 = (139,800 - 30,100)×0.9 - 35,000 = 63,700 yuan

[0059] 2. Saving spare part cost for the production plant

[0060] In the past, the procurement price of the hanging ring of the taphole drill was 120 yuan per piece. After the implementation of the project, the manufacturing and processing cost is 40 yuan per piece. The annual cost reduction for the ironmaking plant is:

[0061] S4 = 21900×(120 - 40) = 1,752,000 yuan

[0062] 3. Total annual benefits

[0063] S = S3 + S4 = 63,700 + 1,752,000 = 1,855,700 yuan

[0064] (2) Social benefits:

[0065] Practice has proved that the semi-automatic gas cutting device for medium and thick plates of this invention has a simple structure, is convenient to operate, safe and applicable, greatly reduces the cost, enables timely gas cutting processing, ensures qualified quality, greatly reduces the labor intensity of operators, meets the production needs, improves customer satisfaction, and has remarkable social benefits.

[0066] This utility model has at least the following beneficial effects:

[0067] (1) The automatic forward function of the plate is realized through the rotation of the idler roller, and the variable-frequency motor makes the forward distance and speed controllable; the adjustment and positioning function of the semi-automatic gas cutting machine guide rail is used to determine the width of the steel plate, thus eliminating the gas cutting scribing process for the plate.

[0068] (2) Two groups of plate slide rails are arranged in front of the gas cutting machine, and plates of different specifications are classified and placed in different material receiving grooves by manually adjusting the plate slide rails, solving the problem that it is time-consuming and laborious for operators to pick up plates.

[0069] (3) A slag collection device, that is, a slag and scrap iron hopper, is designed and manufactured to reduce the slag cleaning work.

[0070] (4) The operation of the machine should be simple, convenient and fast, solving the problems of long time consumption and waste of human resources.

[0071] So far, the embodiments of this utility model have been described in detail. To avoid obscuring the concept of this utility model, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0072] Although some specific embodiments of this utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of this utility model. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be equivalently replaced without departing from the scope and spirit of this utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. A medium-thick plate gas cutting device, characterized in that, Including: A base, the base includes a support table and support columns, the upper surface of the support table is provided with a number of evenly distributed idler rollers, and connecting plates are arranged between the idler rollers; A semi-automatic gas cutting machine, the semi-automatic gas cutting machine is arranged above one side of the support table, and a movable slide rail is arranged below the semi-automatic gas cutting machine; A driving component, the driving component is arranged below the support table, the driving component drives the idler rollers to rotate so as to drive the plate to move, and the driving component adopts variable frequency drive; And A material receiving trough, the material receiving trough is detachably arranged outside the base, and a plate slide rail is also arranged above the material receiving trough.

2. The medium-thick plate gas cutting device according to claim 1, wherein, The upper surface of the connecting plate is 10 - 30 mm lower than the upper surface of the idler roller.

3. The medium-thick plate gas cutting device according to claim 1, characterized in that, The driving component includes a gear motor.

4. The medium-thick plate gas cutting device according to claim 3, characterized in that It further includes a transmission chain, the idler roller is provided with an idler roller gear, and the transmission chain meshes with the idler roller gear and the gear motor.

5. The medium-thick plate gas cutting device according to claim 1, characterized in that Tensioning gears are arranged between the idler rollers.

6. The medium-thick plate gas cutting device according to claim 1, characterized in that It further includes a welding slag and scrap iron bucket, and wheels are arranged at the bottom of the welding slag and scrap iron bucket.

7. The medium-thick plate gas cutting device according to claim 1, characterized in that, It further includes a positioning baffle, the positioning baffle is vertically arranged above the support table and is used for positioning the plate.

8. The medium-thick plate gas cutting device according to claim 1, characterized in that, It further includes a waste material trough, and the waste material trough is arranged below the support table.

9. The medium-thick plate gas cutting device according to claim 1, characterized in that, The medium-thick plate gas cutting device includes a plurality of the material receiving troughs arranged along the moving direction of the plate and further includes multiple groups of the plate slide rails, wherein different groups of plate slide rails are used to guide the cut plates of different specifications into different material receiving troughs.

10. The medium-thick plate gas cutting device according to claim 4, characterized in that, The number of the idler rollers is 8, and 4 of them are installed with the idler roller gears; protection grooves are arranged on the transmission chain and the idler roller gears.

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