Telescopic coal blocking device for coal mining machine and coal mining machine
By setting up a retractable fixed plate and rotating plate structure on the coal mining machine, adjusting the coal blocking height and using connecting parts for limiting, the problems of complex structure and high cost in the existing technology are solved, achieving flexible coal blocking effect and good coal mining machine passability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TIANDI MINING EQUIP TECH CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-07-10
AI Technical Summary
The existing coal-blocking device of the coal mining machine has a complex structure, which increases costs, affects the normal operation of the rocker arm, and increases the overall height of the coal mining machine, affecting the minimum mining height and passability.
It adopts a structure of retractable fixed plate and rotating plate. The coal blocking height can be adjusted by adjusting the angle of the rotating plate relative to the fixed plate. The limiting part is used by the connector, and the multi-level coal blocking height can be adjusted by combining the detachable adjusting plate.
It achieves multi-directional coal blocking effect, avoiding affecting the minimum mining height and passability of the coal mining machine. It has a simple structure, is easy to disassemble and assemble, and is suitable for the widespread use of coal mining machines.
Smart Images
Figure CN224478922U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of coal mining machine technology, specifically relating to a retractable coal blocking device for a coal mining machine and a coal mining machine. Background Technology
[0002] When the coal mining machine is working, such as Figure 1 As shown, the fuselage (such as Figure 1 The structure shown in the middle number 200) often accumulates a large amount of fallen coal (such as... Figure 1 As shown in the diagram (number 300), without a barrier, the machine face is covered with a large amount of coal, causing considerable inconvenience for workers maintaining the machine. Existing technology includes a coal-blocking device installed on the machine body, which uses a hydraulic cylinder to move a pusher plate to push away the coal falling from the top of the machine. However, this solution requires adding many additional mechanisms to the coal mining machine, resulting in a complex structure and increased costs. Furthermore, it requires a separate hydraulic pipe from the rocker arm of the coal mining machine for the coal-blocking function, which also affects the normal coal mining operation of the rocker arm. In addition, adding a coal-blocking device to the machine body increases the overall height of the coal mining machine, affecting its minimum mining height and maneuverability. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a retractable coal blocking device for a coal mining machine and a coal mining machine in general. By adjusting the coal blocking height, the device can achieve the maximum coal blocking effect without affecting the minimum mining height and passability of the coal mining machine.
[0004] This utility model provides a retractable coal blocking device for a coal mining machine, which is installed on the coal mining machine and used to block coal from the top of the machine body during the coal mining process. It includes a fixed plate and a rotating plate. The fixed plate is fixedly connected to the coal mining machine body, and one end of the rotating plate is movably connected to the end of the fixed plate. Multi-directional coal blocking can be achieved by adjusting the angle of the rotating plate relative to the fixed plate.
[0005] Preferably, the rotating plate and the fixed plate are connected by a connector, so that the rotating plate is limited in position during the coal blocking process and its position remains unchanged.
[0006] Preferably, the connecting member is a telescopic member, and its two ends are respectively hinged to the rotating plate and the fixed plate; and / or, the rotating plate and the fixed plate are rotatably connected to each other by a connecting pin; and / or, the fixed plate is fixed on the top surface of the coal mining machine body in an area near the coal wall side, and the rotating plate is connected to the end of the fixed plate facing the coal wall side so that the rotating plate blocks the falling coal on the side away from the oil cylinder of the coal mining machine.
[0007] Preferably, the connector has hinge holes at both ends, and the rotating plate and the fixed plate have hinge seats on their surfaces. The hinge holes and the hinge seats are connected by connecting pins to achieve a hinge connection.
[0008] Preferably, the rotating plate switches between a first position perpendicular to the fixed plate and a second position in the same plane as the rotating plate. The connecting member is a fixed connecting plate. When the rotating plate is in the first position, the two ends of the connecting plate are respectively connected to the fixed plate and the rotating plate to support the rotating plate.
[0009] Preferably, the retractable coal-blocking device for the coal mining machine further includes an adjusting plate, which is detachably connected to the rotating plate to achieve multi-level adjustment of the coal-blocking height.
[0010] Preferably, the adjusting plate is provided with multiple sets of connecting units along the height direction, and the coal retaining height can be adjusted by adjusting the corresponding connecting unit to connect with the rotating plate.
[0011] Preferably, each of the connecting units includes a plurality of first through holes spaced apart in the horizontal direction, and the rotating plate is provided with at least one row of a plurality of second through holes spaced apart in the horizontal direction. The first through holes and the second through holes are fixedly connected by a bolt and nut assembly to achieve a detachable connection between the adjusting plate and the rotating plate.
[0012] Preferably, the adjusting plate is matched with the rotating plate, and the rotating plate is provided with two rows of second through holes. At the same coal blocking height, the two sets of first through holes and the two rows of second through holes are fixedly connected.
[0013] This utility model also provides a coal mining machine, including at least two sets of retractable coal blocking devices for coal mining machines as described in any of the above embodiments. The retractable coal blocking devices for coal mining machines are arranged on the top surface of the coal mining machine body along the walking direction of the coal mining machine and cover the area corresponding to the oil tank of the coal mining machine.
[0014] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.
[0015] The positive and progressive effects of this utility model are as follows:
[0016] According to the telescopic coal blocking device for coal mining machines and the coal mining machine involved in this utility model, a fixed plate and a rotating plate are set on the top surface of the coal mining machine body, and one end of the rotating plate is movably connected to one end of the fixed plate. The rotating plate blocks coal during the coal mining process. In addition, the coal blocking height can be adjusted by adjusting the angle of the rotating plate relative to the fixed plate. On the one hand, it can achieve multi-directional coal blocking function, and on the other hand, it will not affect the minimum mining height and passability of the coal mining machine. The structure is simple, easy to disassemble and assemble, and easy to promote and use on coal mining machines. Attached Figure Description
[0017] Figure 1 This is a partial schematic diagram of the coal falling from the top of a coal mining machine in existing technology.
[0018] Figure 2 This is a front view of the retractable coal blocking device for the coal mining machine and the coal mining machine in an embodiment of this utility model.
[0019] Figure 3 This is a side view of the retractable coal blocking device for the coal mining machine and the coal mining machine in an embodiment of this utility model.
[0020] Figure 4 This is a schematic diagram of the structure of the adjustment plate in an embodiment of this utility model.
[0021] Figure 5 This is a diagram showing the high coal-blocking height of the retractable coal-blocking device for a coal mining machine in an embodiment of this utility model.
[0022] Figure 6 This is a diagram showing the height of the retractable coal blocking device for a coal mining machine in an embodiment of this utility model.
[0023] Figure 7 This is a diagram showing the low coal blocking height state of the retractable coal blocking device for a coal mining machine in an embodiment of this utility model.
[0024] Figure 8 This is a diagram showing the minimum coal-blocking height of the retractable coal-blocking device for a coal mining machine in an embodiment of this utility model. Detailed Implementation
[0025] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.
[0026] <Example>
[0027] As attached Figure 2 and Figure 3 As shown, this embodiment discloses a retractable coal-blocking device 100 for a coal mining machine 200, which is installed on the coal mining machine 200 and used to block coal from the top of the machine body during the coal mining process. The retractable coal-blocking device 100 for the coal mining machine includes: a fixed plate 10 and a rotating plate 20. Specifically,
[0028] like Figure 3 As shown, the fixed plate 10 is fixedly connected to the body of the coal mining machine 200. One end of the rotating plate 20 is movably connected to the end of the fixed plate 10, thereby allowing the angle of the rotating plate 20 relative to the fixed plate 10 to be adjustable. In this way, by adjusting the angle of the rotating plate 20 relative to the fixed plate 10, the height of the rotating plate 20 relative to the coal mining machine 200 can be changed, thus realizing the adjustment of the coal blocking height and achieving multi-directional coal blocking.
[0029] The coal blocking device composed of the fixed plate 10 and the rotating plate 20 in this embodiment can achieve multi-directional coal blocking while not affecting the minimum mining height and passability of the coal mining machine. It has a simple structure, is easy to disassemble and assemble, and is easy to promote and use on coal mining machines.
[0030] In another embodiment, since the rotating plate 20 can rotate relative to the fixed plate 10, the impact of falling coal during coal mining can easily cause the rotating plate 20 to rotate, thereby weakening the coal-blocking effect. To ensure that the rotating plate 20 can effectively block coal during the coal-blocking process, a connecting member 30 is provided between the rotating plate 20 and the fixed plate 10. Thus, the connecting member 30 limits the position of the rotating plate 20 during the coal-blocking process, keeping it unchanged and ensuring the coal-blocking effect.
[0031] In a practical application, the connector 30 can be set as a telescopic component whose length can be extended and retracted. When the position of the rotating plate 20 relative to the fixed plate 10 changes, it can also be adapted by adjusting the telescopic length of the connector 30, which can also effectively limit the rotation plate 20.
[0032] Specifically, the rotating plate 20 and the fixed plate 10 can be rotatably connected to each other via connecting pins 40, which is simple in structure and easy to assemble and disassemble.
[0033] In addition, the two ends of the connector 30 are hinged to the rotating plate 20 and the fixed plate 10 respectively. The rotatable ends and the telescoping length of the connector 30 enable the limiting of the rotating plate 20 at different angles. Specifically, the two ends of the connector 30 are provided with hinge holes, and the rotating plate 20 and the fixed plate 10 are provided with hinge seats on their respective surfaces. The hinge holes and hinge seats are connected by connecting pins 70 to achieve a hinged connection.
[0034] In another practical application, such as Figure 2 and Figure 3As shown, to simplify the overall structure of the coal-blocking device, the rotating plate 20 is configured to block coal when it is perpendicular to the fixed plate 10. Thus, to achieve the limiting function of the rotating plate 20, the connecting member 30 is configured as a fixed-length connecting plate, with its two ends connected to the fixed plate 10 and the rotating plate 20 respectively, thereby keeping the rotating plate 20 in a vertical state for coal blocking. That is, the rotating plate 20 only switches between a first position perpendicular to the fixed plate 10 and a second position in the same plane as the fixed plate 10. Based on this structure, when coal blocking is not required, or when the coal mining height is at its lowest, or when ensuring the minimum mining height of the coal mining machine, the connecting plate can be removed, and the rotating plate 20 can be rotated in the opposite direction to the second position in the same plane as the fixed plate 10; at this time, the coal blocking effect is achieved by the hinged seats on the fixed plate 10 and the rotating plate 20.
[0035] The specific structure of the connector 30 described above can be flexibly applied according to the needs of the actual coal mining scenario.
[0036] In another embodiment, a fixing plate 10 is fixed to the top surface of the coal mining machine 200 near the coal wall side, and a rotating plate 20 is connected to the end of the fixing plate 10 facing the coal wall side, thereby blocking the falling coal on the side of the hydraulic cylinder away from the coal mining machine. This facilitates maintenance or refueling of the hydraulic cylinder from the top of the coal mining machine, and prevents coal slag and other contaminants from entering the hydraulic cylinder and affecting its performance.
[0037] In another embodiment, such as Figure 2 and Figure 3 As shown, in order to achieve multi-level adjustment of the coal blocking height, the retractable coal blocking device 100 for the coal mining machine also includes an adjustment plate 50, which is detachably connected to the rotating plate 20 to achieve multi-level adjustment of the coal blocking height.
[0038] Specifically, such as Figure 4 As shown, the adjusting plate 50 is provided with multiple sets of connecting units 51 along the height direction. By adjusting the corresponding connecting unit 51 to connect with the rotating plate 20, the coal blocking height can be adjusted.
[0039] Each connecting unit 51 includes multiple first through holes 511 spaced apart in the horizontal direction. The rotating plate 20 is provided with at least one row of multiple second through holes 21 spaced apart in the horizontal direction. The first through holes 511 and the second through holes 21 are fixedly connected by the bolt and nut assembly 60 to realize the detachable connection between the adjusting plate 50 and the rotating plate 20.
[0040] In a preferred embodiment, the adjusting plate 50 and the rotating plate 20 are matched, that is, their specifications and dimensions (especially length) are matched, which facilitates disassembly and connection between the two. The rotating plate 20 is provided with two rows of second through holes 21. In this way, at the same coal blocking height, the two sets of first through holes 511 and the two rows of second through holes 21 are fixedly connected to ensure a stable connection between the adjusting plate 50 and the rotating plate 20, and prevent damage caused by the impact of falling coal.
[0041] In this embodiment, both the rotating plate 20 and the adjusting plate 50 can be made of lightweight design plates, which are easy to disassemble and install.
[0042] Furthermore, let's look at the attached diagram: Figure 4 The diagram shows six sets of connecting units 51. Based on the above structure, two sets of connecting units 51 are fixedly connected to the rotating plate 20 at the same coal blocking height, which can achieve an additional five levels of coal blocking height adjustment. In addition, with the two coal blocking heights of the rotating plate 20 itself under the structure of using the connecting plate as the connecting part 30, there are a total of seven levels of coal blocking height adjustment.
[0043] Based on the above structure, such as Figure 3 The diagram shows the state of the adjusting plate 50 and the rotating plate 20 when they are at their highest coal-blocking height (height range indicated by letter A). Figure 5 The diagram shows the state of the regulating plate 50 and the rotating plate 20 when they are at a higher coal blocking height (height range indicated by letter B). Figure 6 The diagram shows the state of the regulating plate 50 and the rotating plate 20 when they are at a medium coal blocking height (height range indicated by the letter C). Figure 7 The diagram shows the state of the regulating plate 50 and the rotating plate 20 when they are at a lower coal blocking height (height range indicated by the letter D). Figure 8 The diagram shows the state of the adjusting plate 50 and the rotating plate 20 when they are at the lowest coal-blocking height (height range indicated by the letter E). It can be seen that the retractable coal-blocking device for the coal mining machine in this embodiment can achieve multi-level adjustment of the coal-blocking height, is flexible and convenient to use, and has a wide range of applications.
[0044] Based on the aforementioned retractable coal-blocking device for coal mining machines, this embodiment also provides a coal mining machine, including at least two sets of the retractable coal-blocking devices 100 described in the above embodiment. The retractable coal-blocking devices 100 are disposed on the top surface of the coal mining machine body along the traveling direction of the coal mining machine, and cover the area corresponding to the oil tank of the coal mining machine. While achieving the function of blocking coal, it also takes into account the minimum mining height and passability of the coal mining machine, with a simple structure and convenient assembly and disassembly.
[0045] The scope of protection of this utility model is not limited to the above-described embodiments. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its scope and spirit. If these modifications and variations fall within the scope of the claims of this utility model and their equivalents, then the intent of this utility model also includes these modifications and variations.
Claims
1. A retractable coal-blocking device for a coal mining machine, installed on the coal mining machine, used to block coal from the top of the machine body during the coal mining process, characterized in that, include: A fixed plate and a rotating plate are provided. The fixed plate is fixedly connected to the body of the coal mining machine, and one end of the rotating plate is movably connected to the end of the fixed plate. Multi-directional coal blocking can be achieved by adjusting the angle of the rotating plate relative to the fixed plate.
2. The retractable coal-blocking device for a coal mining machine according to claim 1, characterized in that, The rotating plate and the fixed plate are connected by a connector, which limits the position of the rotating plate during the coal blocking process so that it remains unchanged.
3. The retractable coal-blocking device for a coal mining machine according to claim 2, characterized in that, The connecting member is a telescopic member, and its two ends are respectively hinged to the rotating plate and the fixed plate; and / or, the rotating plate and the fixed plate are rotatably connected to each other by a connecting pin; and / or, the fixed plate is fixed on the top surface of the coal mining machine body in an area near the coal wall side, and the rotating plate is connected to the end of the fixed plate facing the coal wall side so that the rotating plate blocks the falling coal on the side away from the oil cylinder of the coal mining machine.
4. The retractable coal-blocking device for a coal mining machine according to claim 3, characterized in that, The connector has hinge holes at both ends, and hinge seats are provided on the surfaces of the rotating plate and the fixed plate. The hinge holes and the hinge seats are connected by connecting pins to achieve a hinge connection.
5. The retractable coal-blocking device for a coal mining machine according to claim 2, characterized in that, The rotating plate switches between a first position perpendicular to the fixed plate and a second position in the same plane as the rotating plate. The connecting member is a fixed connecting plate. When the rotating plate is in the first position, the two ends of the connecting plate are respectively connected to the fixed plate and the rotating plate to support the rotating plate.
6. The retractable coal blocking device for a coal mining machine according to any one of claims 1-5, characterized in that, Also includes: An adjusting plate is detachably connected to the rotating plate to achieve multi-level adjustment of the coal retaining height.
7. The retractable coal-blocking device for a coal mining machine according to claim 6, characterized in that, The adjusting plate is provided with multiple sets of connecting units along the height direction. The coal blocking height can be adjusted by adjusting the corresponding connecting unit to connect with the rotating plate.
8. The retractable coal blocking device for a coal mining machine according to claim 7, characterized in that, Each of the connecting units includes multiple first through holes spaced apart in the horizontal direction. The rotating plate is provided with at least one row of multiple second through holes spaced apart in the horizontal direction. The first through holes and the second through holes are fixedly connected by a bolt and nut assembly to achieve a detachable connection between the adjusting plate and the rotating plate.
9. The retractable coal blocking device for a coal mining machine according to claim 8, characterized in that, The adjusting plate is matched with the rotating plate. The rotating plate is provided with two rows of second through holes. At the same coal blocking height, the two sets of first through holes and the two rows of second through holes are fixedly connected.
10. A coal mining machine, characterized in that, It includes at least two sets of retractable coal blocking devices for coal mining machines as described in any one of claims 1 to 9, wherein the retractable coal blocking devices for coal mining machines are disposed on the top surface of the coal mining machine body along the traveling direction of the coal mining machine and cover the area corresponding to the oil tank of the coal mining machine.