Plow-type unloading device and method

Abstract

The present application provides a kind of plow type unloading device, including base, the roller group being set on base, the movable connection component being connected between roller group and base, the push rod support being set on base, the electro-hydraulic push rod being set on push rod support, the plow head being connected in front end of electro-hydraulic push rod, the push rod support and plow head are also provided with telescopic mechanism between.The telescopic mechanism is provided with telescopic slide including outer sleeve and the inner sleeve being set in outer sleeve and the screw rod being connected in one end on inner sleeve and the other end sticking out of outer sleeve.By adjusting telescopic device to achieve the purpose of adjusting plow head telescopic movement along the straight line direction of plow head, when the situation of the material with the diameter greater than 300mm and above is difficult to pass, the problem of easy to cause blockage even scattering is solved.

Description

Technical Field

[0001] This invention relates to a plow-type unloading device and method, and more particularly to a plow-type unloading device and method with an adjustable plow head. Background Technology

[0002] The plow-type unloader is a type of coal unloading and sorting machinery. It boasts advantages such as absolute self-locking, zero internal and external leakage, extremely high overload capacity, and smooth operation. Primarily used for unloading materials at non-unloading drum positions on belt conveyors, the plow head employs a telescopic structure, ensuring smooth passage of materials of various sizes during conveyor transport. This broadens the application range and enhances the practicality of the plow-type unloader. The electro-hydraulic plow-type unloader is an unloading device applied to belt conveyors for intercepting and unloading, ensuring safety and reliability. It not only increases economic efficiency and reduces worker workload but also allows for remote or automatic control, making it widely used in mining, power, metallurgy, and chemical industries.

[0003] However, the existing plowshare of the unloader is prone to large impacts with the material during movement, which can easily cause the entire unloader to shake significantly, resulting in a shortened service life. Furthermore, the position and height of the plowshare cannot be adjusted, which limits its applicability. The material passage height is the height between the lowest point of the plowshare and the horizontal conveyor belt after it is raised. The size of the material passage height determines the maximum block diameter that the conveyor can pass through during unloading. Existing plow-type unloaders have a fixed plow head length and a fixed material clearance height during unloading. However, the size and quantity of the transported material are uncertain under various working conditions, or the material may not have been thoroughly crushed in the previous process. This results in some materials reaching the conveyor belt having very large particle sizes, with the largest reaching 300mm to 450mm. In contrast, the clearance height of a typical plow-type unloader, especially a single-sided plow-type unloader, is only about 300mm when not unloading. In such cases, the unloader may experience blockages or even spillage, requiring manual cleaning and sometimes even machine shutdown. This consumes manpower, delays production, and causes serious economic losses. Summary of the Invention

[0004] In order to effectively solve or at least alleviate the problems existing in the prior art, the purpose of the present invention is to provide a plow-type unloading device and method.

[0005] According to one aspect of the present invention, a plow-type unloading device is provided, comprising a base, a roller assembly disposed on the base, a movable connecting assembly connecting the roller assembly and the base, a push rod bracket disposed on the base, an electro-hydraulic push rod disposed on the push rod bracket, and a plow head connected to the front end of the electro-hydraulic push rod. A telescopic mechanism is also provided between the push rod bracket and the plow head, and the front and rear positions of the plow head can be adjusted by adjusting the telescopic mechanism.

[0006] Furthermore, the push rod bracket has a vertical support on each of the left and right sides, and a horizontal support between the two vertical supports, and the width of the push rod bracket is consistent with the bandwidth of the belt conveyor.

[0007] Furthermore, each of the vertical supports is provided with an L-shaped connecting rod. The L-shaped connecting rod has a first end and a second end. The junction of the first end and the second end has a first hinge point. The L-shaped connecting rod is hinged to the vertical support of the push rod bracket through the first hinge point. The L-shaped connecting rod can rotate around the first hinge point. The second end of the L-shaped connecting rod is hinged to the base to form a second hinge point.

[0008] Furthermore, an electro-hydraulic actuator is hinged at the middle position of the horizontal support. When the electro-hydraulic actuator moves, it can rotate around the hinge point. When the electro-hydraulic actuator retracts, the plow head connected to the front end of the electro-hydraulic actuator lifts up, and the material passes through. When the electro-hydraulic actuator extends, the plow head connected to the front end of the electro-hydraulic actuator falls down, performing the unloading action.

[0009] Furthermore, the idler group includes a front idler group and a rear idler group. The rear idler group is configured as a variable trough angle idler group. The front idler group is provided with movable connecting components on both the left and right sides. One end of the connecting component is connected to the front idler group, and the other end is connected to the second hinge point of the second end of the L-shaped connecting rod on the corresponding side. The connecting component, the L-shaped connecting rod and the base are hinged together.

[0010] Furthermore, the plow head is provided with a first lug and a second lug. When the material block diameter is less than 300mm, the electro-hydraulic actuator is connected to the first lug, and when the material block diameter is greater than 300mm, the voltage actuator is connected to the second lug.

[0011] Furthermore, there are two telescopic mechanisms, each respectively disposed on the first end of the corresponding L-shaped connecting rod, which have the function of adjusting the plow head to telescopically move along the straight line of the plow head. The telescopic mechanism includes a telescopic slide rail disposed on the first end of the L-shaped connecting rod. The telescopic slide rail includes an outer sleeve and an inner sleeve disposed inside the outer sleeve. The outer sleeve is fixed on the first end of the L-shaped connecting rod, and a threaded hole is provided on the upper part of the end near the plow head. A set screw is disposed in the threaded hole to limit the relative movement of the inner and outer sleeves. One end of the inner sleeve is connected to the plow head, and a nut connector is welded to the other end.

[0012] Furthermore, the telescopic mechanism also includes a screw rod with one end connected to the inner sleeve by a nut and the other end protruding from the outer sleeve. The front end of the screw rod is provided with a first convex ring and a second convex ring. Between the first convex ring and the second convex ring, there are two symmetrically arranged retaining plates with semi-circular grooves. By adjusting the screw rod, the inner sleeve can be moved inside the outer sleeve, thereby moving the plowshare connected to the other end of the inner sleeve.

[0013] In another aspect of the present invention, a plow-type unloading method suitable for large-diameter materials is provided. The steps are as follows: when conveying materials larger than 300mm, the voltage push rod is adjusted and connected to the second lug of the plow head. Then, the screws in the telescopic devices located on the left and right sides of the unloading device are adjusted by equal amounts so that the plow head extends in the opposite direction of the conveyor belt. Finally, the inner and outer sleeves are tightened by the set screw. When the electro-hydraulic push rod retracts, the plow head connected to the front end of the electro-hydraulic push rod is raised and the material passes through. When the electro-hydraulic push rod extends, the plow head connected to the front end of the electro-hydraulic push rod falls down to perform the unloading action.

[0014] The present invention has the following beneficial effects: 1. The plow-type unloading device of the present invention has a reasonable and novel structure. It is designed with a telescopic mechanism to adjust the plow head of the plow-type unloading device, which increases the application range of the unloader and solves the problem of material blockage and spillage caused by excessively large material particles during belt conveyor transportation.

[0015] 2. The telescopic mechanism of the plow-type unloading device provided by the present invention adopts a spiral structure, which is simple in structure and easy to operate.

[0016] 3. The plow-type unloading device provided by the present invention has a telescopic mechanism that controls the front and rear positions of the plow head, which is conducive to fine-tuning the material dropping position. When unloading into the silo, because the silo space is large, unloading in only one place will reduce the utilization rate of the silo. Using a telescopic plow head can make the unloading more uniform and greatly improve the utilization rate of the silo. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the unloading device.

[0019] Figure 2 This is an enlarged schematic diagram of the L-shaped connecting rod of the unloading device.

[0020] Figure 3 This is a schematic diagram of the telescopic mechanism.

[0021] Figure 4 This is a schematic diagram of the overall structure of the unloading device during unloading.

[0022] Figure 5 Schematic diagram of the push rod support structure.

[0023] Figure 6 A top view of the plow-type unloading device.

[0024] Figure 7 Schematic diagram of screw structure.

[0025] Figure 8 Schematic diagram of the card plate structure.

[0026] Explanation of reference numerals in the attached drawings: 1 - base, 2 - idler roller assembly, 21 - front idler roller assembly, 22 - rear idler roller assembly, 3 - connecting assembly, 4 - push rod bracket, 5 - electro-hydraulic push rod, 6 - plow head, 7 - telescopic mechanism, 8 - L-shaped connecting rod

[0027] The telescopic mechanism 7 includes: 71-plate, 72-telescopic slide, 73-screw, and 74-set screw.

[0028] The telescopic slide 72 includes: 721-outer sleeve, 722-fixing plate, 723-inner sleeve, 724-nut.

[0029] Screw 73 includes: 731 - first convex ring, 732 - second convex ring

[0030] The L-shaped connecting rod 8 includes: 81-first end, 82-second end, 821-first hinge point, and 822-second hinge point. Detailed Implementation

[0031] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood as not dispensing the presence or addition of one or more other elements or combinations thereof.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. If the processing conditions are not explicitly stated, please refer to the product manual or follow the conventional methods in the field.

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] A plow-type unloading device, Figure 1 A schematic diagram of the overall structure of the unloading device is provided below, and this embodiment is explained in detail with reference to the accompanying drawings.

[0037] According to one aspect of the present invention, a plow-type unloading device is provided, comprising a base 1, a roller assembly 2 disposed on the base, a movable connecting assembly 3 connecting the roller assembly 2 and the base 1, a push rod bracket 4 disposed on the base 1, an electro-hydraulic push rod 5 disposed on the push rod bracket 4, and a plow head 6 connected to the front end of the electro-hydraulic push rod 5. A telescopic mechanism 7 is further provided between the push rod bracket 4 and the plow head 6, and adjusting the telescopic mechanism 7 can adjust the front-to-back position of the plow head 6. When materials with large diameters are present, the front-to-back position of the plow head 6 can be adjusted by adjusting the telescopic mechanism 7, causing the plow head 6 to move forward along its straight line, increasing the height difference between the end of the plow head 6 and the base 1, i.e., the material passage height, thereby preventing material blockage and spillage problems caused by excessively large material diameters during belt conveyor transport.

[0038] In this embodiment, as Figure 5 As shown, the push rod bracket 4 has a vertical support 41 and 42 on each side, and a horizontal support 43 between the two vertical supports. The width of the push rod bracket is consistent with the bandwidth of the belt conveyor. This design with two vertical supports provides support for the telescopic mechanism 7 and the connecting assembly 3. The push rod bracket is designed to match the bandwidth of the belt conveyor, effectively matching it and preventing material spillage during unloading due to width mismatch.

[0039] In this embodiment, as Figure 1 and Figure 4 and Figure 6Each of the vertical supports 41 of the push rod bracket 4 is provided with an L-shaped connecting rod 8. The L-shaped connecting rod has a first end 81 and a second end 82. The junction of the first end 81 and the second end 82 has a first hinge point 821. The L-shaped connecting rod 8 is hinged to the vertical support of the push rod bracket 4 through the first hinge point 821. The L-shaped connecting rod 8 can rotate around the first hinge point 821. The second end 82 of the L-shaped connecting rod 8 is hinged to the base 1 to form a second hinge point 822.

[0040] In this embodiment, as Figure 1 and Figure 4 As shown, an electro-hydraulic push rod 5 is hinged at the middle position of the horizontal support 43 of the push rod bracket 4. When the electro-hydraulic push rod 5 moves, it can rotate around the hinge point. When the electro-hydraulic push rod 5 retracts, the plow head 6 connected to the front end of the electro-hydraulic push rod 5 is raised, and the material passes through. When the electro-hydraulic push rod 5 extends, the plow head 6 connected to the front end of the electro-hydraulic push rod 5 falls down to perform the unloading action.

[0041] In this embodiment, as Figure 1 The idler roller assembly 2 shown includes a front idler roller assembly 21 and a rear idler roller assembly 22. The rear idler roller assembly 22 is configured as a variable trough angle idler roller assembly. Movable connecting components 3 are provided on both the left and right sides of the front idler roller assembly 21. One end of each connecting component 3 is connected to the front idler roller assembly 21, and the other end is connected to the second hinge point 822 of the second end 821 of the L-shaped connecting rod 8 on the corresponding side. The connecting component 3, the L-shaped connecting rod 8, and the base 1 are hinged together. The technical purpose is to allow the idler roller assembly 2 to move flexibly during unloading. When unloading, the idler roller assembly 2 lowers to form a relatively flat plane, which facilitates unloading. When not unloading, the idler roller assembly 2 rises to form a trough angle, which helps prevent material spillage during transportation.

[0042] In this embodiment, the plow head 6 is provided with a first lug 61 and a second lug 62. When the material block diameter is less than 300mm, the electro-hydraulic actuator is connected to the first lug 61; when the material block diameter is greater than 300mm, the voltage actuator is connected to the second lug 62. The technical purpose is to coordinate with the extension mechanism 7 in the next step to adjust the plow head 6 in the material feeding direction, allowing the plow head 6 to adjust forward and upward as a whole. This helps to increase the material passage height, thereby preventing blockage caused by excessively large material blocks.

[0043] In this embodiment, as in this embodiment Figure 3 As shown, there are two telescopic mechanisms 7, each disposed on the first end 81 of the corresponding L-shaped connecting rod 8, and they have the function of adjusting the plowshare 6 to telescopically move along the straight line of the plowshare 6. Figure 3As shown, the telescopic mechanism 7 includes a telescopic slide 72 disposed on the first end 81 of the L-shaped connecting rod 8. The telescopic slide 72 includes an outer sleeve 721, a perforated fixing plate 722 fixed to the front end of the outer sleeve 721, and an inner sleeve 723 disposed inside the outer sleeve 721. The outer sleeve 721 is fixed to the first end 81 of the fixed L-shaped connecting rod 8, and a threaded hole is provided on the upper part of the end near the plow head 6. A set screw 74 is disposed in the threaded hole. When the inner sleeve 723 moves to a suitable position, the set screw 74 is tightened to restrict the relative movement of the inner and outer sleeves. One end of the inner sleeve 723 is connected to the plow head 6, and a nut 724 is welded to the other end. The telescopic mechanism 7 also includes a screw 73 with one end connected to the inner sleeve 723 by the nut 724 and the other end protruding from the outer sleeve 721. One end of the nut 724 is welded to the inner sleeve 723, and the other end is connected to the screw 73, serving a connecting function.

[0044] In this embodiment, as Figure 7 and Figure 8 As shown, the screw 73 has a first protruding ring 731 and a second protruding ring 732 at its front end. Two symmetrical retaining plates 71 with semi-circular grooves are positioned between the first and second protruding rings 731 and 732, respectively. These retaining plates 71 are connected to the fixing plate 722. The screw 73 has the first and second protruding rings 731 and the two symmetrical retaining plates 71 with semi-circular grooves positioned between the two protruding rings to fix the screw 73 and prevent movement. The symmetrical retaining plates 71 with semi-circular grooves also facilitate easy assembly and disassembly.

[0045] In this embodiment, the inner sleeve 723 is moved within the outer sleeve 721 by adjusting the screw 73, which in turn moves the plowshare 6 connected to the other end of the inner sleeve 723. The front-to-back position of the plowshare 6 connected to the inner sleeve 723 can be adjusted by adjusting the screw 73 with the first convex ring 731 and the second convex ring 732.

[0046] In another aspect of the present invention, a plow-type unloading method is provided, the steps of which are as follows: when conveying materials with a diameter greater than 300mm, the voltage push rod is adjusted and connected to the second lug of the plow head, and then the screws in the telescopic devices located on the left and right sides of the unloading device are adjusted by equal amount respectively, so that the plow head extends in the opposite direction of the conveyor belt running. Finally, the inner and outer sleeves are tightened by the set screw. When the electro-hydraulic push rod retracts, the plow head connected to the front end of the electro-hydraulic push rod is lifted and the material passes through. When the electro-hydraulic push rod extends, the plow head connected to the front end of the electro-hydraulic push rod falls down to perform the unloading action.

[0047] When materials with a diameter greater than 300mm or larger have difficulty passing through, blockages or even spillage can easily occur. The telescopic device 7 in this invention effectively solves this problem. This principle can also be used to solve blockage problems caused by materials of other sizes. Other technical features with telescopic devices for adjusting the plow head position are also embodiments of this invention, such as automatic telescopic cylinders. Furthermore, the telescopic device in this invention is also applicable to other types of plow-type unloaders, such as double-sided plow-type unloaders. The technical features of the above embodiments can be combined arbitrarily. To meet the requirements of the Patent Law, Patent Implementation Regulations, and Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0048] Therefore, within the field of plow-type unloader technology, any invention that includes a telescopic device for adjusting the plow head position falls within the protection scope of this invention. The above embodiments are merely one implementation of this invention. Any other modifications to the solution provided by this invention, including adding or reducing components or steps, or applying this invention to other technical fields similar to this invention, all fall within the protection scope of this invention.

Claims

1. A plow-type unloading device, comprising a base, a push rod bracket mounted on the base, a roller assembly mounted on the base, an electro-hydraulic push rod mounted on the push rod bracket, a plow head connected to the front end of the electro-hydraulic push rod, and a telescopic mechanism mounted between the push rod bracket and the plow head, wherein the telescopic mechanism can adjust the front and rear position of the plow head so that the plow head moves along its linear path. The telescopic mechanism includes a telescopic slide rail disposed on the first end of the L-shaped connecting rod. The telescopic slide rail includes an outer sleeve and an inner sleeve disposed inside the outer sleeve. The outer sleeve is fixed to the first end of the L-shaped connecting rod and has a threaded hole at the upper part of the end near the plow head. A set screw is disposed in the threaded hole to limit the relative movement of the inner and outer sleeves. One end of the inner sleeve is connected to the plow head, and a nut connector is welded to the other end. The plowshare is provided with a first lug and a second lug, which are adapted to work with the telescopic mechanism to adjust the front and rear position of the plowshare so that the plowshare moves forward along its straight line.

2. The plow-type unloading device according to claim 1, characterized in that: The push rod bracket has a vertical support on each of its left and right sides, and a horizontal support between the two vertical supports. The width of the push rod bracket is consistent with the bandwidth of the belt conveyor.

3. The plow-type unloading device according to claim 2, characterized in that: Each of the vertical supports is provided with an L-shaped connecting rod. The L-shaped connecting rod has a first end and a second end. The junction of the first end and the second end has a first hinge point. The L-shaped connecting rod is hinged to the vertical support of the push rod bracket through the first hinge point. The L-shaped connecting rod can rotate around the first hinge point. The second end of the L-shaped connecting rod is hinged to the base to form a second hinge point.

4. A plow-type unloading device according to claim 3, characterized in that: An electro-hydraulic actuator is hinged at the middle position of the horizontal support. When the electro-hydraulic actuator moves, it can rotate around the hinge point. When the electro-hydraulic actuator retracts, the plow head connected to the front end of the electro-hydraulic actuator lifts up, and the material passes through. When the electro-hydraulic actuator extends, the plow head connected to the front end of the electro-hydraulic actuator falls down, performing the unloading action.

5. A plow-type unloading device according to claim 4, characterized in that: The idler roller group includes a front idler roller group and a rear idler roller group. The rear idler roller group is configured as a variable trough angle idler roller group. The front idler roller group is provided with movable connecting components on both the left and right sides. One end of the connecting component is connected to the front idler roller group, and the other end is connected to the second hinge point of the second end of the L-shaped connecting rod on the corresponding side. The connecting component, the L-shaped connecting rod and the base are hinged together.

6. A plow-type unloading device according to claim 5, characterized in that: When the material block diameter is less than 300mm, the electro-hydraulic actuator is connected to the first lug; when the material block diameter is greater than 300mm, the electro-hydraulic actuator is connected to the second lug.

7. A plow-type unloading device according to claim 6, characterized in that: There are two telescopic mechanisms, each set on the first end of the corresponding L-shaped connecting rod, which have the function of adjusting the plow head to telescopically move along the straight line of the plow head.

8. A plow-type unloading device according to claim 7, characterized in that: The telescopic mechanism also includes a screw rod with one end connected to the inner sleeve by a nut and the other end protruding from the outer sleeve. The front end of the screw rod is provided with a first convex ring and a second convex ring. Between the first convex ring and the second convex ring are two symmetrically arranged clamping plates with semi-circular grooves. By adjusting the screw rod, the inner sleeve can be moved inside the outer sleeve, thereby moving the plowshare connected to the other end of the inner sleeve.

9. A method for unloading material based on the plow-type unloading device as described in claim 1, comprising the following steps: when the material block diameter is less than 300mm, the electro-hydraulic actuator is connected to the first lug; when the material block diameter is greater than 300mm, the electro-hydraulic actuator is connected to the second lug; when conveying material larger than 300mm, the electro-hydraulic actuator is adjusted to connect to the second lug of the plow head, and then the screws in the telescopic devices located on the left and right sides of the unloading device are adjusted by equal amounts to make the plow head extend in the opposite direction of the conveyor belt; finally, the set screws are used to tighten the inner and outer sleeves; when the electro-hydraulic actuator retracts, the plow head connected to the front end of the electro-hydraulic actuator is raised, and the material passes through; when the electro-hydraulic actuator extends, the plow head connected to the front end of the electro-hydraulic actuator falls, thus performing the unloading action.

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