Roller type material conveyor

Abstract

The utility model relates to the technical field of metallurgical engineering technology, and discloses a roller type material conveyor which comprises a steel base frame, support bases are arranged at the four corners of the bottom end of the steel base frame, and the support bases are used for installing supporting legs or used for being matched with connecting pieces to achieve series connection of a plurality of roller type material conveyors. A plurality of steel rolling shafts are installed on the steel base frame, the first ends of the steel rolling shafts are sequentially connected through a transmission assembly, and the steel rolling shafts can synchronously rotate in the same direction under driving of a driving piece. The material conveyor has the beneficial effects that the overall implementation is simple, the manufacturing cost is low, the support legs are mounted through the support seats, a single-machine working mode of the material conveyor is realized, or support seats of two adjacent material conveyors are connected through connecting pieces, online operation of a plurality of material conveyors is realized, and different conveying lengths can be realized according to different connecting numbers of the material conveyors; and the space construction requirements of blast furnace hearths with various volumes can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical engineering, and particularly relates to a roller type material conveyor. Background Art

[0002] When a new blast furnace is built or the blast furnace is overhauled on a large or medium scale, various constructions such as bricklaying, filling, and filling sleepers are often required in the hearth area. Limited by the on-site environment, the current equipment for material transportation mainly includes belt conveyors, wooden slides, monorail hoists, manual hoists, or simply manual handling. In the limited space of the hearth, these equipment and methods have various potential safety hazards and process defects, such as slipping and friction ignition, generation of toxic and harmful gases, uncontrollable conveying speed, or time-consuming and laborious. Due to these defects, various personal injury accidents often occur during the construction process in the hearth area of the blast furnace, and at the same time, the construction period is long and the progress is slow. Moreover, the existing conveying equipment can only be used for external furnace operations or internal furnace operations alone, which also increases the production cost to a certain extent. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies existing in the prior art, and provide a roller type material conveyor with a simple and reasonable structure, which can avoid friction ignition, does not generate harmful gases, has a controllable conveying speed, and has multiple operation modes.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A roller type material conveyor includes: a steel base frame, the steel base frame extends along a first direction, and support seats are provided at four corners of the bottom end of the steel base frame, and the support seats are used for installing legs or for cooperating with connecting pieces to realize the series connection of multiple roller type material conveyors;

[0006] A plurality of steel rollers, the plurality of steel rollers are arranged at intervals along the first direction, and along a second direction, both ends of each steel roller are rotatably installed on the steel base frame, the second direction is perpendicular to the first direction, and the first ends of the plurality of steel rollers are sequentially connected through a transmission assembly so that the steel rollers can rotate in the same direction and synchronously;

[0007] A driving member, the driving member is installed on the steel base frame, and an output end of the driving member is connected to a second end of at least one steel roller to drive each steel roller to rotate through the transmission assembly.

[0008] Further, the support base includes a first fixed base and a second fixed base; both the first fixed base and the second fixed base are located at the four corners of the bottom end of the steel base frame, and the second fixed base is located inside the first fixed base; the support leg includes a support section and a strengthening section, the support section is perpendicular to the ground, the top end of the support section is connected to the first fixed base, the strengthening section is inclined, and the first end of the strengthening section is connected to the middle upper part of the support section, and the second end of the strengthening section is connected to the second fixed base.

[0009] Further, the transmission assembly includes a chain and sprockets corresponding to the steel rollers one by one. A sprocket is provided at the first end of each steel roller, and the chain is connected to each sprocket.

[0010] Further, the driving member includes a DC motor. The number of the DC motors is two. The two DC motors are installed at both ends of the steel base frame along the first direction, and the output ends of the two DC motors are respectively connected to the steel rollers at both ends of the steel base frame correspondingly.

[0011] Further, the operating voltage of the DC motor is 24V or 12V.

[0012] Further, an emergency stop switch is further included. At least two emergency stop switches are installed on one side of the steel base frame and cooperate with the DC motor.

[0013] Further, a protective housing is further included; the protective housing is arranged on both sides of the steel base frame along the second direction to protect the DC motor and the transmission assembly.

[0014] Further, the steel base frame includes two angle steels extending along the first direction and spaced along the second direction, and the steel rollers are rotatably installed between the two angle steels.

[0015] Further, the interval between the steel rollers is 0.2m.

[0016] Further, the length of the angle steel is 2m, and the number of the steel rollers is 10.

[0017] The utility model has the following advantages over the prior art:

[0018] 1. The roller-type material conveyor of the present utility model is simple to implement as a whole and has a low manufacturing cost. Driven by a driving member and a transmission assembly, multiple steel rollers rotate synchronously in the same direction, causing the carried material to move forward. There is a spacing between the steel rollers, so that dust cannot be conveyed, eliminating the dust generation factor. The adjustable driving member enables the transportation speed to be controllable. The entire set of equipment is made of metal components, eliminating combustibles that can be burned in large quantities. Bracket seats are provided at the four corners of the bottom end of the steel base frame. By using the bracket seats, legs can be installed to achieve single-machine operation or multiple material conveyors can be connected through the bracket seats and connectors to achieve on-line operation. Different numbers of connected material conveyors can achieve different slope lengths of conveying capacity, meeting the construction requirements of the hearth space of various volume blast furnaces.

[0019] 2. The roller-type material conveyor of the present utility model is driven by a high-power DC motor. The working voltage of the DC motor is 24V or 12V to adapt to various special dangerous factor usage conditions such as humidity. The 24V or 12V DC power output by the DC frequency converter outside the working site can be used as the power source to achieve the variable-speed function. Two or three emergency stop switches corresponding to the DC motor are provided. Multiple emergency stop switches provide protection simultaneously. When any one of the emergency stop switches is in the open and disconnected state, the material conveyor immediately stops working and is in the safe protection shutdown state. During on-line operation, the emergency stop switches are in series. When one is disconnected, all on-line equipment stops. A protective housing is provided to physically isolate the drive motor, chain, and sprocket, and only the middle working part of the rolling shaft is exposed. The whole machine is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the top view of the roller-type material conveyor in the embodiment of the present utility model;

[0021] Figure 2 is the top view of the roller-type material conveyor in the embodiment of the present utility model with the protective housing removed;

[0022] Figure 3 is the structural schematic diagram of the roller-type material conveyor in the embodiment of the present utility model with legs installed;

[0023] Figure 4 is the structural schematic diagram of the roller-type material conveyor in the embodiment of the present utility model when performing single-machine operation and loading the opening furnace with filling sleepers;

[0024] Figure 5 is the on-line operation schematic diagram of the roller-type material conveyor in the hearth in the embodiment of the present utility model;

[0025] Figure 6 is Figure 5 the enlarged schematic diagram at position A in

[0026] In the figure: 1. Steel roller; 2. Steel base frame; 3. DC motor; 4. Sprocket; 5. Chain; 6. First fixed seat; 7. Second fixed seat; 8. Emergency stop switch; 9. Protective housing; 10. Angle steel; 11. Middle sleeve; 12. Hearth; 13. Taphole frame; 14. Leg; 1401. Support section; 1402. Reinforcement section; 15. Connector; 16. Slope ladder built by slideway or scaffolding. Detailed implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does 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 to the present invention.

[0029] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the accompanying drawings are not drawn in actual proportional relationships.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further discuss and describe it specifically in the description of the subsequent drawings.

[0031] Embodiment:

[0032] As Figures 1 to 3As shown in the figure, the utility model provides a roller type material conveyor, which includes: a steel base frame 2, the steel base frame 2 extends along the first direction, and support seats are provided at the four corners of the bottom end of the steel base frame 2. The support seats are used to install legs, or are used to cooperate with a connecting piece 15 to realize the series connection of multiple roller type material conveyors; By setting the support seats, various operation modes of this material conveyor can be realized: when the conveying distance is short, a single machine operation mode is adopted, and the support seat can be used to install a temporary support, which can adapt to the needs of various different height operation conditions. When the conveying distance is long, an online operation mode is adopted, and the support seat can be used as a hook point for connecting the front and rear conveyors. The support seats of adjacent two material conveyors are connected through the connecting piece 15 to connect multiple material conveyors in series to realize material conveying.

[0033] Multiple steel rollers 1, multiple steel rollers 1 are arranged at intervals along the first direction, and along the second direction (the second direction in this embodiment is the width direction of the steel base frame), both ends of each steel roller 1 are rotatably installed on the steel base frame 2. The second direction is perpendicular to the first direction. The first ends of multiple steel rollers 1 are sequentially connected through a transmission assembly, so that each steel roller can rotate in the same direction and synchronously. Among them, the steel roller 1 is a steel hollow roller. Adopting a hollow structure can reduce its own weight. A low-voltage DC motor can easily drive the steel roller to rotate to complete the material conveying work. The transmission assembly includes a chain 5 and sprockets 4 corresponding to the steel rollers 1 one by one. A sprocket 4 is connected to the first end of each steel roller 1, and the chain 5 connects the sprockets 4 in sequence to realize that when any one sprocket 4 rotates, all sprockets 4 can rotate in the same direction and synchronously, thereby driving all steel rollers 1 to rotate in the same direction and synchronously.

[0034] A driving member, including two high-power DC motors 3, the DC motors 3 are installed on the side of the steel base frame 2 away from the chain, and the two DC motors 3 are installed at both ends of the steel base frame 2 along the first direction. The output shafts of the two DC motors 3 are respectively connected to the steel rollers at both ends of the steel base frame 2. The working voltage of the DC motor is 24V or 12V to adapt to various special dangerous factor usage conditions such as humidity. The 24V or 12V direct current output by an external DC frequency converter at the operation site can be used as the power supply to realize the variable speed function. Setting two high-power DC motors 3 is mainly to ensure that the power can meet the power demand. Through experiments, it is known that the DC motor should be placed at the forefront of the conveying direction to obtain the maximum driving force. Because this material conveyor will have a reverse operation scenario, therefore, a driving motor is installed at both ends of the conveyor to obtain the maximum driving force in different conveying directions.

[0035] In this embodiment, two or three emergency stop switches 8 are installed on one side of the DC motor. The emergency stop switches 8 are used to immediately stop the DC motor 3. When any one of the emergency stop switches is in an open and disconnected state, the material conveyor will immediately stop working and enter the safe protection shutdown state. During online operation, the emergency stop switches 8 are in series. If one is disconnected, all online devices will stop.

[0036] The roller-type material conveyor in this embodiment further includes a protective housing 9; the protective housing 9 is arranged on both sides of the steel base frame along the second direction to protect the DC motor, sprockets and chains.

[0037] As Figures 3 - 6 shown, the support base includes a first fixed seat 6 and a second fixed seat 7; both the first fixed seat 6 and the second fixed seat 7 are located at the four corners of the bottom end of the steel base frame 2, and the second fixed seat 7 is located inside the first fixed seat 6; both the first fixed seat 6 and the second fixed seat 7 have mounting holes for installing the legs 14 or connecting hooks (connecting parts). The leg 14 includes a support section 1401 and a strengthening section 1402. The support section 1401 is perpendicular to the ground, the top end of the support section 1401 is connected to the first fixed seat 6, the strengthening section 1402 is inclined, and the first end of the strengthening section 1402 is connected to the middle upper part of the support section 1401, and the second end of the strengthening section 1402 is connected to the second fixed seat 7. When the material conveyor operates alone, the support base can be used as the support point of a simple leg. When conducting online operation, it can be used as the hanging point of the connecting hooks of the front and rear two material conveyors. To adapt to the special working environment inside the blast furnace hearth, multiple material conveyors can be connected in series for online operation, and the slope conveying distance can be adjusted according to the number of connected material conveyors at any time, which can meet the working requirements of blast furnace hearths of all furnace volumes.

[0038] The main disadvantages of the material conveying methods commonly used in domestic blast furnace hearths at present are as follows:

[0039] 1. The belt conveyor may slip, catch fire or produce toxic and harmful gases;

[0040] 2. The monorail hoist needs to be pulled obliquely to meet the on-site working needs, which is very dangerous;

[0041] 3. Friction on the wooden slide will also generate heat and toxic and harmful gases;

[0042] 4. Dust will be generated during the conveying process, damaging the limited space environment inside the hearth and deteriorating the working conditions of workers;

[0043] 5. The commonly used power supply is 220V or 380V voltage, and electric shock accidents are likely to occur in humid environments.

[0044] In the roller-type material conveyor in this embodiment, multiple steel rollers 1 laid flat at equal distances rotate synchronously and in the same direction under the drive of a DC motor 3, a sprocket 4, and a chain 5, causing the carried material to move along the material conveying direction. The spacing between the steel rollers 1 prevents dust from being conveyed, eliminating the factor of dust flying. The entire set of equipment is made of metal components (steel), eliminating combustibles that can burn in large quantities. The transmission component uses a chain to drive the sprocket, also eliminating the factor of slipping. The working voltage of the DC motor is a safe voltage of 24V or 12V, which will not cause electric shock. The utility model has the characteristics of having no flammable and heat-generating components, adjustable transportation speed, being driven by a safe voltage, and having no dust flying. It not only realizes the intrinsic safety of the operating equipment in a limited space but also improves the operating efficiency of material conveying.

[0045] The following provides a detailed introduction to the specific details of a roller-type material machine:

[0046] Remove the sealing bolts on the protective shell 9 of the roller-type material conveyor and open the protective shell. Its internal structure can be seen as Figure 2 shown. The roller-type material conveyor uses two angle steels 10 as the framework. The two parallelly arranged angle steels 10 extend along the first direction and are spaced 0.3m along the second direction. Their vertical sides and flat sides are back to back. The length of the angle steel 10 is 2m, and the specification model is 70×70×5mm. On two adjacent vertical sides back to back of the angle steel 10, ten rotatable steel hollow rollers are evenly distributed at a distance of 0.2m. On one side of the first and last steel rollers 1, a high-power DC motor 3 is connected, and on the other side, a sprocket 4 is installed. On the same side of the middle eight steel rollers 1, sprockets 4 are also installed, and all ten sprockets 4 are strung on a chain 5. Driven by the high-power DC motor 3, the chain 5 moves, and all ten sprockets 4 will move synchronously in the same direction to achieve material conveying.

[0047] The following is a detailed introduction to the specific operation mode of this roller-type material machine:

[0048] Case 1:

[0049] As Figure 4 shown, during the process of starting up a blast furnace, it is necessary to load the furnace hearth with starting-up filling sleepers. The traditional method of loading sleepers is purely manual handling, and it generally takes two days to complete under normal circumstances. Using the single-machine operation mode of this roller-type material conveyor: On one side of the roller-type material conveyor, legs 14 are installed on the first fixed seat 6 and the second fixed seat 7 in the conventional method, and the side facing the furnace hearth 12 is directly placed on the middle sleeve 11. Using the roller-type material conveyor, it only takes 3 - 4 hours to complete all the work of loading the sleepers. Using the 24V or 12V direct current output by an external DC frequency converter in the working place as the power supply and increasing the output frequency can further improve the loading speed.

[0050] Case 2:

[0051] As shown in Figure 5 and Figure 6 inside the blast furnace hearth, taking the blast furnace iron notch frame 13 as the conveying port, using the slope ladder 16 built with a slideway or scaffolding specially for operators to enter and exit as the platform, several roller-type material conveyors are connected in series front and back. The first fixed seat 6 at the bottom of the roller-type material conveyor is used as the connecting component of two roller-type material conveyors at this time and is used to install hooks. Several roller-type material conveyors are connected into a whole through the hooks. Using the 24V or 12V direct current output by the DC frequency converter outside the operation site as the power supply to supply power to the conveyors in parallel, the online synchronous speed of several online roller-type material conveyors can be adjusted. Moreover, forward and reverse conversions can be carried out according to the needs of the operation content. Forward conveys materials into the hearth, and reverse conveys materials outside the hearth. If it is felt that the conveying speed is too fast, the frequency can be reduced to achieve ultra-low speed conveying. When online, all the emergency stop switches of the online units are in series. When any one of the emergency stop switches is open, all the online material conveyors stop working and are in the safety protection shutdown state.

[0052] The roller-type material conveying device can also be combined in other ways according to the needs of different on-site operation environments and operation contents to give play to its operation advantages. Since there is a 0.2-meter spacing between the steel rollers 1, the powder cannot be conveyed, thus protecting the operation environment in the limited space. All components of the whole machine are made of metal materials, without combustibles and factors generating toxic and harmful gases. Using a safe voltage enables the equipment to adapt to a particularly humid working environment.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller material conveyor, characterized in that: include: A steel base frame, the steel base frame extends along a first direction, and four corners of the bottom end of the steel base frame are provided with bracket seats, the bracket seats are used to install the legs, or, are used to cooperate with the connecting piece to realize the series connection of multiple roller material conveyors; A plurality of steel rollers, the plurality of steel rollers are arranged at intervals along a first direction, and along a second direction, both ends of each of the steel rollers are rotatably mounted on a steel base frame, the second direction is perpendicular to the first direction, and the first ends of the plurality of steel rollers are sequentially connected through a transmission assembly so that the steel rollers can rotate synchronously in the same direction; A driving member is installed on a steel base frame, and an output end of the driving member is connected to the second end of at least one of the steel rollers to drive each of the steel rollers to rotate through the transmission assembly.

2. The roller material conveyor according to claim 1, characterized in that: The bracket seat includes a first fixed seat and a second fixed seat; the first fixed seat and the second fixed seat are both located at the four corners of the bottom end of the steel frame, and the second fixed seat is located on the inner side of the first fixed seat; the support leg includes a supporting section and a reinforcing section, the supporting section is perpendicular to the ground, the top end of the supporting section is connected to the first fixed seat, the reinforcing section is inclined, and the first end of the reinforcing section is connected to the middle and upper part of the supporting section, and the second end of the reinforcing section is connected to the second fixed seat.

3. The roller material conveyor according to claim 1, characterized in that: The transmission assembly includes a chain and sprockets corresponding to the steel rollers one by one. A sprocket is provided at the first end of each of the steel rollers, and the chain is connected to each of the sprockets.

4. The roller material conveyor according to claim 1, characterized in that: The driving member includes a DC motor, and the number of the DC motors is two. The two DC motors are installed at two ends of the steel base frame along the first direction, and the output ends of the two DC motors are respectively connected to the steel rollers at the two ends of the steel base frame.

5. The roller material conveyor according to claim 4, characterized in that: The operating voltage of the DC motor is 24V or 12V.

6. The roller material conveyor according to claim 5, characterized in that: It also includes an emergency stop switch, at least two of which are installed on one side of the steel base frame and matched with the DC motor.

7. The roller material conveyor according to claim 4, characterized in that: It also includes a protective shell; the protective shell is arranged on both sides of the steel base frame along the second direction and is used to protect the DC motor and the transmission component.

8. The roller material conveyor according to claim 1, characterized in that: The steel base frame comprises two angle steels extending in a first direction and spaced apart in a second direction, and the steel roller is rotatably installed between the two angle steels.

9. The roller material conveyor according to claim 1 or 8, characterized in that: The interval between the steel rollers is 0.2 m.

10. The roller material conveyor according to claim 8, characterized in that: The length of the angle steel is 2 m, and the number of the steel rollers is ten.

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