A coal mine fully mechanized hydraulic support protection assembly

Abstract

This utility model discloses a protective component for a fully mechanized hydraulic support in coal mines, specifically relating to the field of fully mechanized coal mining technology. It includes: a base frame, with symmetrically arranged support members at both ends of the top side of the base frame; a top plate connecting the top ends of two of the support members; a hydraulic cylinder fixed in the middle of the top side of the base frame, with its top end fixedly connected to the top plate; and multiple slots on the top side of the top plate, with fixed seats embedded inside the slots. This utility model, by setting up a protective plate and a buffer unit, with the buffer unit consisting of multiple sets of structures such as top columns, a first spring, a slider, and a second spring, allows the protective plate to be subjected to pressure from rock layers or falling debris when it is subjected to compression or impact. The protective plate can drive the movement of multiple sets of top columns to achieve initial energy reduction and buffering. Simultaneously, the top columns can drive the slider to further reduce energy loss, thereby significantly reducing the pressure and impact energy on the protective plate and greatly enhancing the pressure resistance and protection performance of the hydraulic support, resulting in good performance.

Description

Technical Field

[0001] This utility model relates to the field of coal mine fully mechanized mining technology, specifically to a protective component for a hydraulic support in fully mechanized coal mining. Background Technology

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas, generally divided into underground coal mines and open-pit coal mines. Fully mechanized coal mining, or integrated mechanized mining, is the core technology system for efficient underground coal mining. It integrates coal mining, loading, transportation, support, and goaf treatment through fully mechanized equipment working in tandem, and is the mainstream mode of modern coal mining.

[0003] Currently, when existing fully mechanized hydraulic supports in coal mines are in use, the support plates at the top of the hydraulic supports are easily broken and damaged by rock compression or falling gravel, which makes the hydraulic supports unable to be used normally, greatly shortens the service life of the equipment, and has poor protective performance. Therefore, this application proposes a protective component for fully mechanized hydraulic supports in coal mines. Utility Model Content

[0004] The purpose of this utility model is to provide a protective component for a fully mechanized hydraulic support in coal mines. By setting up a protective plate and a buffer unit, the buffer unit is composed of multiple sets of structures such as top columns, a first spring, a slider, and a second spring. When the protective plate is squeezed by rock layers or crushed by falling rocks, the protective plate can drive the movement of multiple sets of top columns to achieve primary buffering and energy reduction. At the same time, the top columns can drive the movement of the slider to further buffer and reduce energy reduction. This can greatly reduce the squeezing and impact energy on the protective plate, thereby greatly enhancing the pressure resistance and protection performance of the hydraulic support. The effect is good, thus solving the above-mentioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective component for a fully mechanized hydraulic support in a coal mine, comprising: The base frame has symmetrical support members at both ends of its top side, and a top plate is connected between the top ends of the two support members. A hydraulic cylinder is fixed in the middle of the top side of the base frame, and the top end of the hydraulic cylinder is fixedly connected to the top plate. The top side of the top plate is provided with multiple slots, and a fixing seat is embedded in the slot. A buffer unit is provided on the fixing seat, and a protective plate is provided between the tops of the multiple buffer units.

[0006] Preferably, the buffer unit includes first buffer cavities symmetrically arranged at both ends of the top side of the fixed base. A first spring is fixedly connected to the bottom of the first buffer cavity, and a top rod is connected to the top of the first spring. The top of the top rod extends to the outside of the first buffer cavity and is fixedly connected to the protective plate.

[0007] Preferably, the buffer unit further includes second buffer cavities symmetrically disposed at both ends of the top side of the fixed base. The second buffer cavities are located between the two first buffer cavities, and the two second buffer cavities are each fixed with a second spring at their opposite ends. The ends of the second springs are connected to sliders, which slide within the second buffer cavities. The top of the slider is rotatably connected to a top rod on one side via a pivot shaft, and a first connecting arm is rotatably connected to the top of the slider.

[0008] Preferably, a guide rod is fixedly connected inside the second buffer cavity, and the slider and the second spring are both sleeved on the outside of the guide rod.

[0009] Preferably, the top side of the fixed base has a groove between the two second buffer cavities, and a top column is slidably connected inside the groove. The end of the top column extending outside the groove is symmetrically connected to the two sliders via a rotating shaft with a second connecting arm, and a buffer head is provided at the top of the top column.

[0010] Preferably, the support member includes a support column and a support rod. The bottom end of the support column is fixedly connected to the base frame, and the support column has a sliding cavity inside. The top end of the support rod is fixedly connected to the top plate, and the bottom end of the support rod is slidably fitted into the sliding cavity.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: By setting up a protective plate and a buffer unit, the buffer unit consists of multiple sets of structures such as top rods, first springs, sliders, and second springs. When the protective plate is squeezed by rock layers or crushed rocks fall, the protective plate can drive multiple sets of top rods to move to achieve primary buffering and energy reduction. At the same time, the top rods can drive the sliders to move to buffer and reduce energy again, thereby greatly reducing the squeezing and impact energy on the protective plate, and thus greatly enhancing the pressure resistance and protection performance of the hydraulic support. The effect is good. By setting up top columns, grooves, and a second connecting arm, while the protective plate is subjected to force, multiple sets of top columns can drive the buffer heads to push against the protective plate. That is, when the protective plate is subjected to a large impact, the reaction force of multiple sets of buffer heads can effectively resist the impact on the protective plate, thereby greatly improving the deformation resistance of the structure and having a high safety factor. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the connection structure between the support column and the support rod of this utility model; Figure 3 This is a longitudinal sectional view of the top plate of this utility model; Figure 4 This is a schematic diagram of the connection structure between the top plate and the protective plate of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Base frame; 2. Hydraulic cylinder; 3. Support column; 4. Support rod; 5. Top plate; 6. Protective plate; 7. Slide cavity; 8. Slot; 9. Fixed seat; 10. First buffer cavity; 11. First spring; 12. Top column; 13. Second buffer cavity; 14. Slider; 15. Second spring; 16. Guide rod; 17. First connecting arm; 18. Groove; 19. Top column; 20. Buffer head; 21. Second connecting arm. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figures 1-4 The protective assembly for a fully mechanized hydraulic support in a coal mine, as shown, includes: The base frame 1 has symmetrical support members at both ends of its top side. A top plate 5 is connected between the top ends of the two support members. Specifically, the support members include support columns 3 and support rods 4. The bottom end of the support column 3 is fixedly connected to the base frame 1, and the support column 3 has a sliding cavity 7 inside. The top end of the support rod 4 is fixedly connected to the top plate 5, and the bottom end of the support rod 4 slides in the sliding cavity 7. A hydraulic cylinder 2 is fixedly fixed in the middle of the top side of the base frame 1. The top end of the hydraulic cylinder 2 is fixedly connected to the top plate 5. Thus, by activating the hydraulic cylinder 2, the hydraulic cylinder 2 can drive the top plate 5 to move. Then, the top plate 5 can drive the support rods 4 at both ends to slide in the sliding cavity 7, thereby adjusting the extension length between the support rods 4 and the support column 3 to adjust the length of the support member. This allows for flexible adjustment of the support height of the hydraulic support according to the size of the coal mine shaft.

[0017] The top side of the top plate 5 is provided with multiple slots 8, and a fixing seat 9 is embedded in the slot 8. A buffer unit is provided on the fixing seat 9, and a protective plate 6 is provided between the tops of the multiple buffer units. Specifically, the buffer unit includes a first buffer cavity 10 symmetrically arranged at both ends of the top side of the fixing seat 9. A first spring 11 is fixedly connected to the bottom of the first buffer cavity 10. A top rod 12 is connected to the top of the first spring 11. The top of the top rod 12 extends to the outside of the first buffer cavity 10 and is fixedly connected to the protective plate 6.

[0018] In one specific embodiment of this utility model, the buffer unit further includes a second buffer cavity 13 symmetrically disposed at both ends of the top side of the fixed base 9. The second buffer cavity 13 is located between the two first buffer cavities 10, and a second spring 15 is fixed at the opposite end of the interior of each of the two second buffer cavities 13. A slider 14 is connected to the end of the second spring 15. The slider 14 is slidably fitted in the second buffer cavity 13, and a first connecting arm 17 is rotatably connected between the top of the slider 14 and the top rod 12 on one side through a rotating shaft.

[0019] By installing a protective plate 6 on the top of the top plate 5 and adding a buffer unit between the protective plate 6 and the top plate 5, the protective capability of the top of the hydraulic support can be effectively enhanced. Specifically, when the protective plate 6 is squeezed by the rock layer or crushed by gravel, the protective plate 6 can drive multiple sets of push rods 12 to move, so that the push rods 12 slide inside the push rods 12 and squeeze the first spring 11 to achieve primary buffer energy reduction. At the same time, the push rods 12 can drive the slider 14 to slide inside the second buffer cavity 13 through the first connecting arm 17, so that the slider 14 squeezes the second spring 15 to buffer energy reduction again. This can greatly reduce the squeezing and impact energy received by the protective plate 6, thereby greatly enhancing the pressure resistance and protection performance of the hydraulic support, and the effect is good.

[0020] Furthermore, a guide rod 16 is fixedly connected inside the second buffer cavity 13, and the slider 14 and the second spring 15 are both sleeved on the guide rod 16. Based on this, the guide rod 16 can support and limit the slider 14 and the second spring 15.

[0021] In another specific embodiment of this utility model, a groove 18 is provided in the middle of the top side of the fixed base 9 between the two second buffer cavities 13. A top post 19 is slidably connected inside the groove 18. The end of the top post 19 extending outside the groove 18 is symmetrically connected to the two sliders 14 via a rotating shaft with a second connecting arm 21. A buffer head 20 is provided at the top of the top post 19.

[0022] While the slider 14 moves within the second buffer cavity 13, it can drive the second connecting arm 21 to rotate, causing the second connecting arm 21 to drive the top column 19 to slide within the groove 18. This allows the top column 19 to drive the buffer head 20 to push against the protective plate 6. When the protective plate 6 is subjected to a large impact, the reaction force of multiple buffer heads 20 can effectively resist the impact on the protective plate 6, thereby greatly improving the deformation resistance of the structure and resulting in a high safety factor.

[0023] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A protective assembly for a fully mechanized hydraulic support in coal mines, characterized in that, include: The base frame (1) has symmetrical support members at both ends of its top side, and a top plate (5) is connected between the top ends of the two support members. A hydraulic cylinder (2) is fixed in the middle of the top side of the base frame (1), and the top end of the hydraulic cylinder (2) is fixedly connected to the top plate (5). The top side of the top plate (5) is provided with multiple slots (8), and a fixing seat (9) is embedded in the slot (8). A buffer unit is provided on the fixing seat (9), and a protective plate (6) is provided between the tops of the multiple buffer units.

2. The protective assembly for a fully mechanized hydraulic support in a coal mine according to claim 1, characterized in that: The buffer unit includes a first buffer cavity (10) symmetrically arranged at both ends of the top side of the fixed seat (9). A first spring (11) is fixedly connected to the bottom of the first buffer cavity (10). A top rod (12) is connected to the top of the first spring (11). The top of the top rod (12) extends to the outside of the first buffer cavity (10) and is fixedly connected to the protective plate (6).

3. The protective assembly for a fully mechanized hydraulic support in a coal mine according to claim 2, characterized in that: The buffer unit also includes a second buffer cavity (13) symmetrically arranged at both ends of the top side of the fixed seat (9). The second buffer cavity (13) is located between the two first buffer cavities (10), and the two second buffer cavities (13) are fixed with a second spring (15) at opposite ends. The end of the second spring (15) is connected to a slider (14). The slider (14) is slidably fitted in the second buffer cavity (13), and the top of the slider (14) is rotatably connected to the top rod (12) on one side through a rotating shaft with a first connecting arm (17).

4. The protective assembly for a fully mechanized hydraulic support in a coal mine according to claim 3, characterized in that: The second buffer cavity (13) is fixedly connected to a guide rod (16), and the slider (14) and the second spring (15) are both sleeved on the outside of the guide rod (16).

5. A protective assembly for a fully mechanized hydraulic support in a coal mine according to claim 3, characterized in that: The top side of the fixed base (9) is provided with a groove (18) between the two second buffer chambers (13). A top post (19) is slidably connected inside the groove (18). The end of the top post (19) extending to the outside of the groove (18) is symmetrically connected to the two sliders (14) via a rotating shaft with a second connecting arm (21). A buffer head (20) is provided at the top of the top post (19).

6. The protective assembly for a fully mechanized hydraulic support in a coal mine according to claim 1, characterized in that: The support includes a support column (3) and a support rod (4). The bottom end of the support column (3) is fixedly connected to the base frame (1), and the inside of the support column (3) is provided with a sliding cavity (7). The top end of the support rod (4) is fixedly connected to the top plate (5), and the bottom end of the support rod (4) is slidably fitted in the sliding cavity (7).

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