Parallel rising and falling bilateral plow discharger

Abstract

The utility model provides a parallel rising and falling double-side plow discharger, and belongs to the field of dischargers, the parallel rising and falling double-side plow discharger comprises a support, a plowshare and a movable carrier roller, the support is fixedly arranged below a belt, the plowshare and the movable carrier roller can be installed on the support in a manner of being parallel to the horizontal plane, the plowshare is arranged above the belt, and the movable carrier roller is arranged below the belt; a driving device used for driving the plowshare to rise and fall is arranged on the support, a linkage mechanism is arranged between the plowshare and the movable carrier roller, the movable carrier roller rises and falls in the opposite direction along with rising and falling of the plowshare under the action of the linkage mechanism, and the plowshare falls to drive the movable carrier roller to lift the belt upwards till the bottom of the plowshare is tightly attached to the belt. According to the parallel rising and falling bilateral plow discharger, parallel rising and falling of the plowshakes are achieved, and the situation that due to unstable rising and falling, shaking discharging is not thorough during discharging, coal scattering is caused, and the site cleaning workload and site pollution are increased is avoided.

Description

Technical Field

[0001] This application belongs to the field of unloader technology, and more specifically, relates to a parallel lifting double-sided plow unloader. Background Technology

[0002] As a core piece of equipment for material conveying in industrial production, the operational efficiency of the unloading device of a coal conveyor belt directly affects the overall operating efficiency and environmental protection level of the conveying system. In industrial fields such as thermal power generation, coal washing and processing, and port transshipment, the unloader, as an important functional component of the coal conveyor belt, undertakes the critical task of precise material diversion.

[0003] Existing unloaders generally use a triangular inclined lifting mechanism. This structure consists of a rigid connecting rod with three hinged points. The lifting and lowering of the plow head is achieved by a hydraulic cylinder or a pneumatic cylinder. During use, the triangular inclined lifting mechanism is unstable, and the shaking during unloading can lead to incomplete unloading and coal spillage, thereby increasing the workload of on-site cleanup and pollution.

[0004] Furthermore, the open unloading structure commonly used in existing technologies also has significant drawbacks. The working mechanism of this type of unloader is directly exposed to the working environment. When handling different types of coal, especially dry coal powder with a moisture content of less than 8% or fine coal with a particle size of less than 3mm, the dynamic dust generated during the plowshare unloading process is particularly prominent. At the same time, the durability of the plow blade assembly is also a key factor limiting the performance of traditional unloaders. Existing plow blade wear blocks have a short service life, requiring replacement after only one year of normal use. If inspection personnel fail to detect the wear of the plow blades, it can even scratch the conveyor belt.

[0005] To address the above issues, a parallel lifting double-sided plow-type unloader is proposed. Summary of the Invention

[0006] In view of this, the present application provides a parallel lifting double-sided plow unloader to solve the technical problems of unstable lifting and lowering during the use of traditional unloaders in the prior art, incomplete unloading due to shaking, resulting in coal spillage, increased on-site cleaning workload and on-site pollution, as well as on-site dust pollution caused by open unloading structure and the service life of plow blades.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] On one hand, a parallel lifting double-sided plow-type unloader is provided, including a bracket, a plow head, and a movable idler roller. The bracket is fixedly installed below the belt. The plow head and the movable idler roller are respectively installed on the bracket parallel to the horizontal plane. The plow head is located above the belt, and the movable idler roller is located below the belt. A drive device for driving the plow head to lift and lower is provided on the bracket. A linkage mechanism is provided between the plow head and the movable idler roller. Under the action of the linkage mechanism, the movable idler roller lifts and lowers in the opposite direction at the same time as the plow head lifts and lowers. The plow head falling drives the movable idler roller to lift the belt upward until the bottom of the plow head is tightly flat against the belt.

[0009] In some embodiments, the plowshare is a plate-like structure with a horizontal cross-section in the shape of a "V", and the center of the plowshare coincides with the center of the belt.

[0010] In some embodiments, the plowshare is mounted on a support via a first parallel linkage mechanism; the first parallel linkage mechanism includes linkage one, linkage two, linkage three, and linkage four, with two linkage one fixedly connected in parallel to the left and right sides of the support, and two linkage two fixedly connected to the left and right sides of the plowshare respectively arranged in parallel above the two linkage one, and linkage three and linkage four, which are parallel to each other, are hinged between linkage one and linkage two on the left and right sides respectively.

[0011] In some embodiments, the movable idler is mounted on the bracket via a second parallel linkage mechanism; the second parallel linkage mechanism includes a link six, with two parallel links six on each side hinged between the movable idler and the bracket.

[0012] In some embodiments, the linkage mechanism includes a crossbar two and a connecting rod five. The crossbar two is fixedly connected between the connecting rods four on the left and right sides, and the two ends of the connecting rods five on the left and right sides, which are parallel to each other, are respectively hinged to the crossbar two and the movable roller.

[0013] In some embodiments, the plowshare lifting and lowering drive device is an electric push rod, with a crossbar fixedly connected between the connecting rods two on the left and right sides. The fixed end of the electric push rod is hinged to the bracket, and the push rod end of the electric push rod is hinged to the crossbar.

[0014] In some embodiments, an organic cover is provided outside the plowshare and the movable idler roller.

[0015] In some embodiments, dust curtains are provided at the front and rear ends of the hood where the belt passes.

[0016] In some embodiments, a wear-resistant plow blade is provided at the location where the plow head contacts the belt.

[0017] In some embodiments, a secondary plowshare is fixedly disposed behind the plowshare.

[0018] The beneficial effects of the parallel lifting and lowering double-sided plow unloader provided in this application embodiment are as follows: Compared with the prior art, the parallel lifting and lowering double-sided plow unloader of this application embodiment adopts a four-bar curved linkage mechanism to realize the parallel lifting and lowering of the plow head and the movable roller; it not only improves the stability of lifting and lowering, reduces the phenomenon of shaking and incomplete unloading, but also optimizes the mechanical transmission path, reduces energy consumption and component wear; the parallel lifting and lowering mechanism ensures that the plow head can maintain uniform contact with the belt when lifting and lowering, avoids the risk of belt scratches caused by angle changes, and improves unloading efficiency and accuracy;

[0019] The machine adopts a fully enclosed design, which completely encloses key components such as the plow and movable rollers inside the machine cover, effectively isolating the dust generated during the unloading process from the external environment; the dust curtains set at the front and rear ends of the machine cover further enhance the sealing effect, ensuring the cleanliness of the belt passage area, and the absence of dust in the on-site space during operation, which significantly improves the environmental quality of the equipment operating space and reduces the health risks to workers and environmental pollution.

[0020] The contact area between the plowshare and the belt is designed with a 60mm wide and 25mm thick wear-resistant material, significantly increasing the service life of the plow blades. The widened design of the wear-resistant plow blades not only improves wear resistance but also ensures that they will not scratch the belt during use. In addition, a secondary plowshare is fixedly installed on the plowshare to clean up the fine coal dust remaining after the main plow blades unload, ensuring that the belt passes through cleanly without any spilled coal. This not only extends the overall service life of the plowshare but also improves the cleanliness after unloading, reducing the amount of on-site cleanup work. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional schematic diagram of a parallel lifting double-sided plow unloader provided in this application embodiment;

[0023] Figure 2 A perspective view of a parallel lifting double-sided plow unloader provided in this application embodiment, with the dust curtain and machine cover concealed;

[0024] Figure 3 for Figure 2 Another view from a different direction;

[0025] Figure 4This is a three-dimensional schematic diagram of the plow head of a parallel lifting double-sided plow unloader provided in an embodiment of this application.

[0026] The following are the labeling elements in the figure:

[0027] 1-Bracket; 2-Fixed roller; 3-Dust curtain; 4-Machine cover; 5-Plowhead; 51-Wear-resistant plow blade; 52-Secondary plowhead; 6-Moving roller; 7-Electric push rod; 8-Link 1; 9-Link 2; 10-Link 3; 11-Link 4; 12-Crossbar 1; 13-Crossbar 2; 14-Link 5; 15-Link 6. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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 this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the parallel lifting double-sided plow unloader mainly consists of a support 1, a fixed roller 2, a plow head 5, a movable roller 6, a machine cover 4, and a dust curtain 3.

[0033] The support frame 1 is the supporting structure for the entire unloader, and is fixedly installed below the coal conveyor belt. In this embodiment, the support frame 1 is a welded steel structure to ensure the stability and durability of the unloader. Preferably, fixed idlers 2 for supporting the coal conveyor belt are provided on the front and rear sides of the support frame 1. The belt carries coal and other materials over the support frame 1 and unloads them into the coal drop pipes on both sides through the plowshare 5 in this embodiment.

[0034] The plowshare 5 is the core component of this unloader, used to unload coal from the conveyor belt. For example... Figure 4 As shown, the plowshare 5 is designed as a plate-like structure with a horizontal cross-section in the shape of a "V". The tip of the "V" shape of the plowshare 5 is opposite to the running direction of the belt, and its center is aligned with the center of the belt to ensure that the coal can be evenly unloaded into the coal drop pipes on both sides. When the bottom of the plowshare 5 is in close contact with the belt, the coal on the belt is unloaded into the coal drop pipes on both sides due to the obstruction of the plowshare 5.

[0035] The plowshare 5 is mounted on the support 1 via a first parallel linkage mechanism to achieve the function of rising and falling parallel to the horizontal plane.

[0036] The movable idler roller 6 is positioned below the belt and is used to level the belt and ensure it is flush with the plow head 5 when the plow head 5 falls. The movable idler roller 6 is mounted on the bracket 1 via a second parallel linkage mechanism and is connected to the plow head 5 via a linkage mechanism to ensure that the plow head 5 and the movable idler roller 6 can rise and fall simultaneously in opposite directions.

[0037] It should be noted that the fixed idler 2 and the movable idler 6 are important components commonly used in belt conveyors in the prior art. Their core structure consists of rotatable rollers that cooperate with the belt sliding. Therefore, their structures will not be described in detail in this application. The difference is that the movable idler 6 can rise and fall parallel to the horizontal plane. Furthermore, when in use, the top of the movable idler 6 should be higher than the top of the fixed idler 2; when not in use, the top of the movable idler 6 should be lower than the top of the fixed idler 2.

[0038] Furthermore, in order to reduce dust pollution during the unloading process, such as Figure 1 As shown, a fully enclosed hood 4 is installed outside the plow head 5 and the movable idler roller 6. The hood 4 encloses the entire unloader in an independent space, effectively preventing the spread of dust. In this embodiment, the hood 4 can be made into a split, detachable structure. The lower half of the hood 4 surrounds the main components of the parallel lifting double-sided plow unloader, and the upper half of the hood 4 is connected to the lower half of the hood by bolts or other means, thus completely enclosing the parallel lifting double-sided plow unloader.

[0039] like Figure 1As shown, doors are required at both the front and rear ends of the machine cover 4 for the belt to pass through, and sealed dust curtains 3 are installed on the doors. In this embodiment, the dust curtains 3 are made of soft and durable materials, which will not obstruct the operation of the belt, and can fit tightly against the belt to prevent dust from escaping from the openings of the machine cover 4.

[0040] like Figure 4 As shown, to improve the service life of the plowshare 5, a wear-resistant plow blade 51 is installed at the contact point between the plowshare 5 and the belt. The wear-resistant plow blade 51 is made of wear-resistant material with a width of 60mm and a thickness of 25mm. The widened design of the wear-resistant plow blade 51 increases the service life of the plow blade and will not scratch the belt during use. At the rear of the plowshare 5, an auxiliary plowshare 52 is installed to clean up the fine coal dust remaining after the plowshare 5 unloads, ensuring that the belt passes through cleanly without spilled coal.

[0041] In this embodiment, see Figure 2 and Figure 3 The first parallel linkage mechanism includes link 1 (8), link 2 (9), link 3 (10), and link 4 (11). Links 1 (8) are fixedly connected in parallel to the left and right sides of the bracket 1, and links 2 (9) are fixedly connected in parallel to the left and right sides of the plowshare 5, and are positioned above the two links 1 (8). Links 3 (10) and 4 (11) are hinged between links 1 (8) and 2 (9) on the left or right side, respectively, and are parallel to each other. When the plowshare drive device moves link 2 (9) up and down, the plowshare 5 will achieve the function of rising and falling parallel to the horizontal plane through the transmission action of links 3 (10) and 4 (11).

[0042] The second parallel linkage mechanism includes linkage six 15. Two parallel linkages six 15 are hinged between the movable roller 6 and the bracket 1 on either the left or right side. When the plow head 5 rises and falls, the movable roller 6 will move in the opposite direction through the action of the linkage mechanism.

[0043] like Figure 2 and Figure 3As shown, the linkage mechanism includes a second crossbar 13 and a fifth connecting rod 14. A second crossbar 13 is fixedly connected between the left and right connecting rods 11. In this embodiment, the second crossbar 13 is fixedly connected to a protrusion extending from the lower end of the connecting rod 11 towards the movable roller 6. The two ends of the parallel connecting rods 14 on the left and right sides are respectively hinged to the second crossbar 13 and the movable roller 6. When the plowshare 5 rises and falls, the connecting rod 5 14 will drive the movable roller 6 to move up and down through the transmission action of the connecting rod 4 11 and the crossbar 2 13, so as to achieve synchronous rise and fall in the opposite direction with the plowshare 5. The linkage mechanism is as follows: when the plowshare 5 falls, the protrusion at the lower end of the connecting rod 4 11 will move away from the movable roller 6, thereby pulling the movable roller 6 upward through the connecting rod 5 14. When the plowshare 5 rises, the protrusion at the lower end of the connecting rod 4 11 will move closer to the movable roller 6, driving the crossbar 2 13 to move upward. The crossbar 2 13 pushes the movable roller 6 downward through the connecting rod 5 14. Furthermore, when the connecting rod 6 15 of the second parallel linkage mechanism is in a vertical state, it is the limit state of the lifting of the movable roller 6. Before this, the plowshare 5 should fall to the state where the belt is tightly flat.

[0044] In this embodiment, the driving device is an electric push rod 7, such as... Figure 2 and Figure 3 As shown, a crossbar 12 is fixedly connected between the connecting rods 2 and 9 on the left and right sides. The fixed end of the electric push rod 7 is hinged to the bracket 1, and the end of the push rod is hinged to the crossbar 12. When the electric push rod 7 extends or retracts, it will drive the connecting rods 2 and 9 to move up and down, thereby driving the plow head 5 to achieve the function of parallel lifting and lowering.

[0045] The working principle of this parallel lifting double-sided plow-type unloader is as follows: When the unloader is working, the electric push rod 7 starts and drives the plow head 5 to rise and fall in parallel. When the plow head 5 is raised, the lower movable roller 6 is driven to sink through the four-bar linkage mechanism, including the first parallel linkage mechanism, the second parallel linkage mechanism, and the linkage mechanism. When the plow head 5 is lowered, the lower movable roller 6 is lifted through the four-bar linkage mechanism, keeping the belt level with the plow blades. During the unloading process, the wear-resistant plow blades 51 can effectively reduce the wear of the plow head 5 and extend its service life; while the auxiliary plow head 52 is responsible for cleaning up the fine coal dust remaining after the plow head 5 unloads, ensuring that the belt passes through cleanly without any spilled coal.

[0046] Furthermore, because the unloader adopts a fully enclosed design and has sealed dust curtains 3 at both the front and rear ends of the hood 4, it can effectively block dust pollution generated during the unloading process. The dust is completely sealed inside the hood 4 and is circulated and digested within the sealed space by the rotating airflow generated by the coal flow from the coal discharge pipes on both sides, thus achieving a dust-free environment on site.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A parallel lifting double-sided plow-type unloader, characterized in that, The device includes a support (1), a plow (5), and a movable roller (6). The support (1) is fixedly installed below the belt. The plow (5) and the movable roller (6) can be installed on the support (1) parallel to the horizontal plane. The plow (5) is located above the belt, and the movable roller (6) is located below the belt. A drive device for driving the plow (5) to rise and fall is provided on the support (1). A linkage mechanism is provided between the plow (5) and the movable roller (6). Under the action of the linkage mechanism, the movable roller (6) rises and falls in the opposite direction at the same time as the plow (5). The falling of the plow (5) drives the movable roller (6) to lift the belt upward until the bottom of the plow (5) is closely flat with the belt.

2. The parallel lifting double-sided plow-type unloader as described in claim 1, characterized in that, The plowshare (5) is a plate-shaped structure with a "V"-shaped cross-section in the horizontal direction, and the center of the plowshare (5) is consistent with the center of the belt.

3. The parallel lifting double-sided plow-type unloader as described in claim 1, characterized in that, The plowshare (5) is mounted on the bracket (1) via a first parallel linkage mechanism. The first parallel linkage mechanism includes a first linkage (8), a second linkage (9), a third linkage (10), and a fourth linkage (11). The two first linkages (8) are fixedly connected in parallel to the left and right sides of the bracket (1). The two second linkages (9) that are fixedly connected to the left and right sides of the plowshare (5) are arranged in parallel above the two first linkages (8). The third linkage (10) and the fourth linkage (11) are respectively hinged between the first linkage (8) and the second linkage (9) on the left and right sides.

4. A parallel lifting double-sided plow-type unloader as described in claim 3, characterized in that, The movable roller (6) is mounted on the bracket (1) via a second parallel linkage mechanism; the second parallel linkage mechanism includes a link six (15), with two parallel link six (15) on the left and right sides respectively hinged between the movable roller (6) and the bracket (1).

5. A parallel lifting double-sided plow-type unloader as described in claim 4, characterized in that, The linkage mechanism includes a crossbar two (13) and a connecting rod five (14). The crossbar two (13) is fixedly connected between the connecting rod four (11) on the left and right sides. The two ends of the connecting rod five (14) on the left and right sides are respectively hinged to the crossbar two (13) and the movable roller (6).

6. A parallel lifting double-sided plow-type unloader as described in claim 3, characterized in that, The driving device is an electric push rod (7), and a crossbar (12) is fixedly connected between the connecting rods (9) on the left and right sides. The fixed end of the electric push rod (7) is hinged to the bracket (1), and the push rod end of the electric push rod (7) is hinged to the crossbar (12).

7. A parallel lifting double-sided plow-type unloader as described in claim 1, characterized in that, An organic cover (4) is installed outside the plowshare (5) and the movable idler (6).

8. A parallel lifting double-sided plow-type unloader as described in claim 7, characterized in that, Dust curtains (3) are installed at the front and rear ends of the machine cover (4) where the belt passes.

9. A parallel lifting double-sided plow-type unloader as described in claim 1, characterized in that, A wear-resistant plow blade (51) is provided at the position where the plow head (5) contacts the belt.

10. A parallel lifting double-sided plow-type unloader as described in claim 1, characterized in that, A secondary plowshare (52) is fixedly installed behind the plowshare (5).

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