Lifting and blocking device for large-inclination mining face

Abstract

The application provides a large-inclination mining face lifting gangue blocking device, and relates to the technical field of gangue blocking. The device comprises a mounting seat, a hydraulic oil cylinder and a guide column vertically arranged on the mounting seat, a gangue blocking plate connected with the piston rod of the hydraulic oil cylinder, a guide cylinder matched with the guide column and arranged on the gangue blocking plate, a connecting frame hingedly connected with the right end of the gangue blocking plate, a flexible connecting plate installed on the connecting frame, a connecting lug arranged on the left end of the gangue blocking plate, and a connecting hole matched with the connecting lug and arranged on the flexible connecting plate. The device can flexibly adjust the gangue blocking height by driving the gangue blocking plate to lift through the hydraulic oil cylinder, and the cooperation of the guide column and the guide cylinder ensures the lifting stability and reduces the shaking. The flexible connecting plate can buffer the impact of the gangue, adapt to the terrain changes, avoid damage caused by rigid connection, prolong the service life of the device, and realize the detachable connection of adjacent gangue blocking devices, so as to facilitate the installation and expansion, improve the universality, effectively reduce the safety risk caused by the coal and gangue splashing, and provide reliable protection for the operating personnel.

Description

Technical Field

[0001] This application relates to the field of rock-blocking technology, and more specifically, to a lifting rock-blocking device for steep-angle mining faces. Background Technology

[0002] In steeply inclined thin coal seam mining, the rolling and splashing of coal and gangue are extremely prominent, with significant randomness in the direction of the fall. Some gangue rolls into the support structure from the front, causing injury to workers. Furthermore, during the cutting operation of the coal mining machine, collapsing coal and gangue fly everywhere, posing a safety hazard of falling into the support structure. Therefore, to effectively ensure the personal safety of workers at the working face, installing reliable gangue-blocking devices in front of the supports has become a necessary safety protection measure.

[0003] However, the front rock-blocking devices of the current frame mostly adopt flexible rock-blocking curtain suspension structures, which generally have technical defects such as insufficient wear resistance, weak anti-aging performance, significant strength decay, limited impact resistance, difficulty in adapting to continuous dynamic loads, and weak strength of connection parts. These problems have constituted significant safety hazards. Summary of the Invention

[0004] The purpose of this application is to provide a lifting and retaining device for large-angle mining faces, which can solve the technical problems mentioned in the background art.

[0005] This application provides a lifting rock-blocking device for steep-angle mining faces, including a mounting base. A hydraulic cylinder and a guide column are vertically mounted on the mounting base. The piston rod of the hydraulic cylinder is connected to a rock-blocking plate. The rock-blocking plate is provided with a guide cylinder adapted to the guide column. The guide cylinder is movably sleeved on the guide column. A connecting frame is hinged to the right end of the rock-blocking plate. A flexible connecting plate is mounted on the connecting frame. A connecting ear is provided at the left end of the rock-blocking plate. A connecting hole adapted to the connecting ear is opened on the flexible connecting plate. The connecting hole and the connecting ear are engaged by a connector to realize a detachable connection between adjacent rock-blocking devices.

[0006] Furthermore, the connecting ear is provided in two places, which are arranged one above the other. The connecting ear has a first insertion hole that is adapted to the connector. The connector is an L-shaped pin and can be inserted into the first insertion hole of the two connecting ears.

[0007] Furthermore, the number of guide posts is at least two, and they are spaced apart along the width direction of the baffle plate.

[0008] Furthermore, the mounting base is provided with connecting components corresponding to the hydraulic cylinder and the guide column. The hydraulic cylinder and the guide column are detachably connected to the mounting base through the connecting components at corresponding positions. The baffle plate is fixed with an ear seat, and the piston rod of the hydraulic cylinder is detachably connected to the ear seat.

[0009] Furthermore, the connecting assembly includes a support base, a first pin, and a first U-shaped clamp. The support base is fixed on the mounting base and has a receiving hole. A plug-in block is provided on one side of the mounting base. The plug-in block has a first plug-in hole adapted to the first pin and the first plug-in hole penetrates the plug-in block and the support base. The plug-in block has a second plug-in hole adapted to the first U-shaped clamp and the second plug-in hole penetrates the plug-in block and communicates with the first plug-in hole. The first pin has an annular limiting groove adapted to the first U-shaped clamp and the annular limiting groove is correspondingly arranged with the second plug-in hole. The lower ends of the hydraulic cylinder and the guide column are respectively inserted into the receiving holes of the corresponding support bases. The lower ends of the hydraulic cylinder and the guide column have second plug-in through holes adapted to the first pin.

[0010] Furthermore, the ear seat is provided with a third insertion through hole, the piston rod of the hydraulic cylinder is provided with a fourth insertion through hole, the ear seat is provided with a second pin, the second pin passes through the third insertion through hole and the fourth insertion through hole, the tail of the second pin is provided with a fourth insertion through hole, a second U-shaped clip is inserted into the fourth insertion through hole, a washer is provided between the second U-shaped clip and the ear seat, and the washer is sleeved on the second pin.

[0011] Furthermore, the flexible connecting plate is made of a high-strength belt.

[0012] Furthermore, the mounting base has an L-shaped cross-section, and both the hydraulic cylinder and the guide column are mounted on the horizontal panel of the mounting base. The vertical panel of the mounting base is provided with multiple mounting holes.

[0013] The beneficial effects of this utility model are:

[0014] This invention uses a hydraulic cylinder to drive the rock-blocking plate to rise and fall, allowing for flexible adjustment of the rock-blocking height according to actual working conditions, thus improving the targeting and effectiveness of the rock-blocking. The cooperation between the guide column and the guide cylinder enhances the stability of the rock-blocking plate's movement, reduces swaying, and improves the reliability of the rock-blocking. The flexible connecting plate effectively buffers the impact of rock debris, avoiding structural damage caused by rigid connections. It also adapts to the complex terrain changes of steep-angle working faces, extending the service life of the device. Adjacent rock-blocking devices can be detachably connected, facilitating installation and allowing for flexible expansion of the rock-blocking area according to actual needs, improving the versatility and applicability of the device. It provides reliable safety protection for workers in steep-angle mining faces, reducing the safety risks caused by coal and rock rolling and splashing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0017] Figure 2 For this Figure 1 A cross-sectional view of the central AA axis;

[0018] Figure 3 For this Figure 1 A cross-sectional view of the BB axis;

[0019] Figure 4 This is a schematic diagram showing the installation position of the rock-blocking device in some embodiments of this application;

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Mounting base; 2. Hydraulic cylinder; 3. Guide column; 4. Guide cylinder; 5. Connecting frame; 6. Flexible connecting plate; 61. Connecting hole; 7. Connecting ear; 71. First insertion through hole; 8. Connecting piece; 9. Connecting assembly; 91. Support base; 911. Receiving hole; 92. First pin; 921. Annular limiting groove; 93. First U-shaped clamp; 10. Ear seat; 11. Insertion block; 111. First insertion hole; 112. Second insertion hole; 12. Second insertion through hole; 13. Second pin; 14. Second U-shaped clamp; 15. Washer; 16. Slag baffle plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, 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, or the orientation or positional relationship commonly used when the product of this application is in use. 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0029] like Figure 1As shown, this application provides a lifting rock-blocking device for steep slope mining faces, including a mounting base 1. A hydraulic cylinder 2 and a guide column 3 are vertically mounted on the mounting base 1. The piston rod of the hydraulic cylinder 2 is connected to a rock-blocking plate 16. A guide cylinder 4 adapted to the guide column 3 is provided on the rock-blocking plate 16. The guide cylinder 4 is movably sleeved on the guide column 3. A connecting frame 5 is hinged to the right end of the rock-blocking plate 16. A flexible connecting plate 6 is installed on the connecting frame 5. A connecting ear 7 is provided at the left end of the rock-blocking plate 16. A connecting hole 61 adapted to the connecting ear 7 is opened on the flexible connecting plate 6. The connecting hole 61 and the connecting ear 7 are engaged by a connecting piece 8 to realize a detachable connection between adjacent rock-blocking devices. The hydraulic cylinder 2... The drive mechanism for raising and lowering the rock-blocking plate 16 allows for flexible adjustment of the rock-blocking height according to actual working conditions, improving the targeting and effectiveness of rock-blocking. The cooperation between the guide column 3 and the guide cylinder 4 enhances the stability of the rock-blocking plate 16's movement, reduces swaying, and improves the reliability of rock-blocking. The flexible connecting plate 6 effectively buffers the impact of rock debris, avoiding structural damage caused by rigid connections. It also adapts to the complex terrain changes of steep-angle working faces, extending the service life of the device. Adjacent rock-blocking devices can be detachably connected, facilitating installation and flexibly expanding the rock-blocking area according to actual needs, improving the versatility and applicability of the device. This provides reliable safety protection for workers in steep-angle mining faces, reducing the safety risks caused by coal and rock rolling and splashing.

[0030] like Figure 1 As shown, there are two connecting ears 7, which are arranged one above the other. Each connecting ear 7 has a first insertion hole 71 that is adapted to the connector 8. The connector 8 is an L-shaped pin that can be inserted into the first insertion hole 71 of the two connecting ears 7. The connecting ears 7 are correspondingly arranged with the connecting holes 61 of the flexible connecting plate 6. When connecting adjacent rock-blocking devices, the connecting ears 7 of the rock-blocking plate 16 of one rock-blocking device are inserted into the two connecting holes 61 of the flexible connecting plate 6 of the other adjacent rock-blocking device. Then, the straight rod part of the connector 8 passes through the first insertion hole 71 of the two connecting ears 7 in sequence, so that the two adjacent rock-blocking devices can be reliably connected. The user can expand the effective rock-blocking area according to actual needs.

[0031] like Figure 1 As shown, there are at least two guide posts 3, which are spaced apart along the width of the rock-blocking plate 16. Specifically, there are two guide posts 3, which are symmetrically arranged on both sides of the hydraulic cylinder 2. When the hydraulic cylinder 2 drives the rock-blocking plate 16 to rise and fall, each guide cylinder 4 slides synchronously on the corresponding guide post 3. The lateral displacement and rotation of the rock-blocking plate 16 are constrained by the two guide cylinders 4 and the guide posts 3, ensuring the stability of the rock-blocking plate 16 during the rising and falling process. At the same time, when the rock-blocking plate 16 is impacted by rock, part of the impact force is transmitted to the mounting base 1 along the guide cylinders 4 and the guide posts 3, which can reduce the impact force on the hydraulic cylinder 2 and extend the service life of the hydraulic cylinder 2.

[0032] like Figure 1-3 As shown, the mounting base 1 is provided with a connecting component 9 corresponding to the hydraulic cylinder 2 and the guide column 3. The hydraulic cylinder 2 and the guide column 3 are detachably connected to the mounting base 1 through the connecting component 9 at the corresponding position. The rock-blocking plate 16 is fixed with an ear seat 10. The piston rod of the hydraulic cylinder 2 is detachably connected to the ear seat 10, so that the entire device can be disassembled for replacement or maintenance. It is also convenient for the overall disassembly and transportation of the device, especially suitable for the transportation of the rock-blocking device in narrow alleys.

[0033] like Figure 1-3 As shown, the connecting assembly 9 includes a support base 91, a first pin 92, and a first U-shaped clip 93. The support base 91 is fixed on the mounting base 1 and has a receiving hole 911. A plug-in block 11 is provided on one side of the mounting base 1. The plug-in block 11 has a first plug-in hole 111 that mates with the first pin 92, and the first plug-in hole 111 passes through the plug-in block 11 and the support base 91. The plug-in block 11 also has a second plug-in hole 112 that mates with the first U-shaped clip 93. The second insertion hole 112 penetrates the insertion block 11 and communicates with the first insertion hole 111. The first pin 92 is provided with an annular limiting groove 921 that matches the first U-shaped clamp 93. The annular limiting groove 921 is correspondingly set with the second insertion hole 112. The lower ends of the hydraulic cylinder 2 and the guide column 3 are respectively inserted into the receiving holes 911 of the corresponding support base 91. The lower ends of the hydraulic cylinder 2 and the guide column 3 are provided with a second insertion through hole 12 that matches the first pin 92. During installation, The lower end of the hydraulic cylinder 2 or guide column 3 is inserted into the receiving hole 911 of the support base 91, so that the second insertion through hole 12 is aligned with the first insertion hole 111 on the insertion block 11. Then, the first pin 92 is passed through the first insertion hole 111 and the second insertion through hole 12 in sequence to achieve initial fixation. Finally, the first U-shaped clip 93 is inserted into the second insertion hole 112, so that the first U-shaped clip 93 is engaged in the annular limiting groove 921 of the first pin 92. Through the limiting effect of the U-shaped structure, the axial movement of the first pin 92 is prevented, thereby firmly fixing the hydraulic cylinder 2 or guide column 3 to the support base 91. When disassembling, the operation is reversed. First, the first U-shaped clip 93 is removed, and then the first pin 92 is pulled out to separate the hydraulic cylinder 2 or guide column 3 from the corresponding support base 91. The pluggable design of the first pin 92 and the first U-shaped clip 93 can quickly complete the installation, disassembly and replacement of related components without complicated tools, greatly reducing maintenance difficulty and time cost.

[0034] like Figure 1As shown, the lug 10 has a third insertion hole, the piston rod of the hydraulic cylinder 2 has a fourth insertion hole, the lug 10 has a second pin 13, the second pin 13 passes through the third insertion hole and the fourth insertion hole, the tail of the second pin 13 has a fourth insertion hole, a second U-shaped clip 14 is inserted into the fourth insertion hole, a washer 15 is provided between the second U-shaped clip 14 and the lug 10, the washer 15 is sleeved on the second pin 13. During installation, the fourth insertion hole of the piston rod of the hydraulic cylinder 2 is aligned with the lug 10. Align the third insertion hole with the second pin 13, insert the second pin 13 through the third insertion hole and the fourth insertion hole to form a preliminary connection, then put the washer 15 into the tail of the second pin 13, and then insert the second U-shaped clip 14 into the fourth insertion hole at the tail of the second pin 13 to use the U-shaped structure to hold the second pin 13 in place to prevent it from coming out; when disassembling, first remove the second U-shaped clip 14 and the washer 15, and then pull out the second pin 13 to separate the piston rod from the ear seat 10. The plug-in connection method facilitates quick assembly and disassembly.

[0035] like Figure 1 As shown, the flexible connecting plate 6 is made of a high-strength belt. The high-strength belt has high strength, high wear resistance and good flexibility, which can effectively buffer the impact of gangue and avoid structural damage caused by rigid connection. The elasticity of the belt can adapt to the terrain changes of the steep working face and the displacement of equipment, ensuring the continuous stability of the gangue blocking system. At the same time, the belt material is widely available and low in cost, and it is easy to cut, splice and replace, which helps to reduce the maintenance cost of the device and improve the overall economy and applicability.

[0036] like Figure 1-3 As shown, the mounting base 1 has an L-shaped cross-section. The hydraulic cylinder 2 and guide column 3 are both mounted on the horizontal panel of the mounting base 1. The vertical panel of the mounting base 1 has multiple mounting holes. In use, as... Figure 4 As shown (coal mining machine A, scraper conveyor B, the rock-blocking device of this application C, hydraulic support D), the mounting base 1 of the rock-blocking device of this application is mounted on the scraper conveyor by bolts.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lifting and retaining device for large-angle mining faces, characterized in that: The device includes a mounting base on which a hydraulic cylinder and a guide column are vertically mounted. The piston rod of the hydraulic cylinder is connected to a rock-blocking plate. The rock-blocking plate has a guide cylinder adapted to the guide column, which is movably sleeved on the guide column. A connecting frame is hinged to the right end of the rock-blocking plate, and a flexible connecting plate is mounted on the connecting frame. A connecting ear is provided at the left end of the rock-blocking plate, and a connecting hole adapted to the connecting ear is opened on the flexible connecting plate. The connecting hole and the connecting ear are engaged by a connector to achieve a detachable connection between adjacent rock-blocking devices.

2. The lifting and retaining device for large-angle mining face according to claim 1, characterized in that: The connector has two ears, which are arranged one above the other. Each ear has a first insertion hole that matches the connector. The connector is an L-shaped pin that can be inserted into the first insertion hole of the two ears.

3. The lifting and retaining device for large-angle mining face according to claim 1, characterized in that: The number of guide posts is at least two, and they are spaced apart along the width direction of the baffle plate.

4. The lifting and retaining device for large-angle mining face according to claim 1, characterized in that: The mounting base is provided with connecting components corresponding to the hydraulic cylinder and the guide column. The hydraulic cylinder and the guide column are detachably connected to the mounting base through the connecting components at corresponding positions. The baffle plate is fixed with an ear seat, and the piston rod of the hydraulic cylinder is detachably connected to the ear seat.

5. A lifting and retaining device for steep-angle mining faces according to claim 4, characterized in that: The connecting assembly includes a support base, a first pin, and a first U-shaped clamp. The support base is fixed on the mounting base and has a receiving hole. A plug-in block is provided on one side of the mounting base. The plug-in block has a first plug-in hole adapted to the first pin and the first plug-in hole penetrates through the plug-in block and the support base. The plug-in block has a second plug-in hole adapted to the first U-shaped clamp and the second plug-in hole penetrates through the plug-in block and communicates with the first plug-in hole. The first pin has an annular limiting groove adapted to the first U-shaped clamp and the annular limiting groove is correspondingly arranged with the second plug-in hole. The lower ends of the hydraulic cylinder and the guide column are respectively inserted into the receiving holes of the support base at corresponding positions. The lower ends of the hydraulic cylinder and the guide column have second plug-in through holes adapted to the first pin.

6. A lifting and retaining device for large-angle mining face according to claim 4, characterized in that: The lug seat is provided with a third insertion through hole, the piston rod of the hydraulic cylinder is provided with a fourth insertion through hole, the lug seat is provided with a second pin, the second pin passes through the third insertion through hole and the fourth insertion through hole, the tail of the second pin is provided with a fourth insertion through hole, a second U-shaped clip is inserted into the fourth insertion through hole, a washer is provided between the second U-shaped clip and the lug seat, and the washer is sleeved on the second pin.

7. A lifting and retaining device for large-angle mining face according to claim 1, characterized in that: The flexible connecting plate is made of high-strength belt.

8. A lifting and retaining device for steep-angle mining face according to claim 1, characterized in that: The mounting base has an L-shaped cross-section. The hydraulic cylinder and the guide column are both mounted on the horizontal panel of the mounting base, and the vertical panel of the mounting base has multiple mounting holes.

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