Hydraulic jacking support for mine construction

Abstract

The hydraulic jacking support for mine construction comprises a base, a first hydraulic cylinder and a main beam are installed on the base, a first sliding groove is formed in the main beam, a telescopic beam is connected into the first sliding groove in a sliding mode, a second hydraulic cylinder used for driving the telescopic beam to slide is installed on the main beam, and the second hydraulic cylinder is connected with the telescopic beam in a sliding mode. The device further comprises a plug beam and a connecting assembly, the plug beam is connected to the main beam in a sliding mode, the thickness of the plug beam is equal to the height difference between the telescopic beam and the main beam, and the length of the plug beam is equal to the length of the telescopic beam sliding out of the first sliding groove. The connecting assembly is used for achieving sliding of the plug beam on the main beam. Compared with the prior art, the hydraulic jacking support for mine construction can effectively support a coal seam on the upper portion of the telescopic beam, the situation that the hydraulic jacking support for the mine cannot be smoothly pushed forwards due to the fact that the coal seam on the upper portion of the telescopic beam sinks is avoided, and guarantee is provided for smooth proceeding of coal mining work.

Description

A hydraulic jacking support for mine construction Technical Field

[0001] This utility model belongs to the field of mining equipment technology, specifically relating to a hydraulic jacking support for mine construction. Background Technology

[0002] Mine hydraulic jacking supports are key equipment in mining operations, effectively resisting the pressure of rock strata and ensuring the safety and efficiency of miners.

[0003] Existing hydraulic jacking supports for mines, such as those from Shandong Xinhang Coal Machinery and Liansheng Coal Machinery, while increasing the protected area to some extent and ensuring the smooth passage of more powerful coal mining machines, have design flaws. Specifically, although the telescopic beam expands the protected area when it slides out from the main beam, in actual use, because the upper surface of the telescopic beam is lower than the upper surface of the main beam, the telescopic beam cannot contact the top of the coal seam. During mining, if this part of the coal seam subsides, it will block the main beam, preventing the hydraulic jacking support from advancing smoothly and seriously affecting the smooth progress of coal mining operations.

[0004] Therefore, in order to address the aforementioned technical problems, it is necessary to provide a hydraulic jacking support for mine construction.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this utility model is to provide a hydraulic jacking support for mine construction, which can solve the above-mentioned problems.

[0007] To achieve the above objectives, a specific embodiment of this utility model provides a hydraulic jacking support for mine construction, including a base, on which a first hydraulic cylinder and a main beam are mounted. A first sliding groove is formed on the main beam, and a telescopic beam is slidably connected within the first sliding groove. A second hydraulic cylinder for driving the telescopic beam to slide is mounted on the main beam. The support also includes a stop beam and a connecting assembly. The stop beam is slidably connected to the main beam, and the thickness of the stop beam is equal to the height difference between the telescopic beam and the main beam. The length of the stop beam is equal to the length by which the telescopic beam slides out of the first sliding groove. The connecting assembly is used to realize the sliding of the stop beam on the main beam.

[0008] In one or more embodiments of this utility model, the connecting assembly includes a first fixing plate and a slider. The first fixing plate is fixedly connected to the telescopic beam. The upper end face of the first fixing plate is flush with the upper end face of the main beam. A second sliding groove matching the slider is provided on the first fixing plate. The slider is slidably connected in the second sliding groove.

[0009] In one or more embodiments of this utility model, a third inclined surface is provided on the stop beam, and a first inclined surface matching the third inclined surface is provided on the main beam.

[0010] In one or more embodiments of this utility model, a wedge-shaped block is fixedly connected to the stop beam, and a second inclined surface matching the wedge-shaped block is provided on the telescopic beam.

[0011] In one or more embodiments of this utility model, a limiting block is integrally formed on the slider, and a limiting groove matching the limiting block is formed on the groove wall of the second sliding groove, and the limiting block is slidably connected in the limiting groove.

[0012] In one or more embodiments of this utility model, the width of the plug beam is equal to the width of the main beam.

[0013] In one or more embodiments of this utility model, a first connecting plate is fixedly connected to the piston rod of the second hydraulic cylinder, and the first connecting plate is detachably connected to a first fixed plate.

[0014] In one or more embodiments of this utility model, a second fixing plate is detachably connected to the main beam, a pair of third connecting plates are fixedly connected to the second fixing plate, and the second hydraulic cylinder is fixedly connected to the second fixing plate.

[0015] In one or more embodiments of this utility model, the second fixing plate is a pair, the second hydraulic cylinder is welded to a second fixing plate away from the first fixing plate, and the second fixing plate near the first fixing plate has a through hole that matches the second hydraulic cylinder.

[0016] In one or more embodiments of this utility model, a second connecting plate is fixedly connected to the first fixing plate, and a protective frame is detachably connected to the second connecting plate. A through groove matching the protective frame is opened on the second fixing plate near the first fixing plate, and the protective frame passes through the through groove and is slidably connected in the through groove.

[0017] Compared with the prior art, the hydraulic jacking support for mine construction of this utility model can effectively support the coal seam above the telescopic beam, preventing the hydraulic jacking support from being unable to advance smoothly due to the subsidence of the coal seam above the telescopic beam, thus ensuring the smooth progress of coal mining work. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the structure of a hydraulic jacking support for mine construction in one embodiment of the present invention;

[0020] Figure 2 is a cross-sectional view of a hydraulic jacking support for mine construction in one embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the structure at point A in Figure 2;

[0022] Figure 4 is a schematic diagram of the plug beam structure of a hydraulic jacking support for mine construction in one embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of a hydraulic jacking support for mine construction in one embodiment of this utility model;

[0024] Figure 6 is a schematic diagram of the main beam of a hydraulic jacking support for mine construction in one embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the protective component of a hydraulic jacking support for mine construction in one embodiment of the present invention.

[0026] Explanation of key figure labels:

[0027] 1. Base; 11. First hydraulic cylinder; 2. Main beam; 21. First slide groove; 22. First inclined surface; 23. Second hydraulic cylinder; 231. First connecting plate; 3. Telescopic beam; 31. Second inclined surface; 4. Plug beam; 41. Third inclined surface; 42. Wedge block; 5. First fixing plate; 51. Second slide groove; 52. Limiting groove; 53. Second connecting plate; 6. Slider; 61. Limiting block; 7. Second fixing plate; 701. Through groove; 702. Through hole; 71. Third connecting plate; 8. Protective frame. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0029] As shown in Figures 1 to 6, a hydraulic jacking support for mine construction in one embodiment of the present invention includes a base 1, a first hydraulic cylinder 11 and a main beam 2 installed on the base 1, a first sliding groove 21 provided on the main beam 2, a telescopic beam 3 slidably connected in the first sliding groove 21, and a second hydraulic cylinder 23 for driving the telescopic beam 3 to slide on the main beam 2.

[0030] The base 1 is installed on the propulsion device, and the hydraulic system of the hydraulic jacking support for mine construction is started. The piston rod of the second hydraulic cylinder 23 extends, causing the telescopic beam 3 to slide outward, creating a larger protective zone below the main beam 2 and the telescopic beam 3. Then, the piston rod of the first hydraulic cylinder 11 extends, lifting the main beam 2 so that it fits against the top of the coal seam, providing support for the top of the coal seam. The coal mining machine then mines the sidewall of the coal seam within the protected zone. This is existing technology and will not be elaborated further.

[0031] Because after the telescopic beam 3 extends out of the first chute 21, there is a certain height difference between the upper end face of the telescopic beam 3 and the upper end face of the main beam 2. The telescopic beam 3 cannot be close to the top of the coal seam. If the top of this part of the coal seam sinks during coal mining, although the telescopic beam 3 can block the coal seam, this part of the sunken coal seam will block the front end of the main beam 2, causing the base 1 to be unable to advance smoothly, which seriously affects the smooth progress of coal mining.

[0032] To solve the above problems, the hydraulic jacking support for mine construction also includes a stop beam 4 and a connecting assembly. The stop beam 4 is slidably connected to the main beam 2. The thickness of the stop beam 4 is equal to the height difference between the telescopic beam 3 and the main beam 2. The length of the stop beam 4 is equal to the length of the telescopic beam 3 that slides out from the first slide groove 21. The connecting assembly is used to realize the sliding of the stop beam 4 on the main beam 2.

[0033] Specifically, the connecting components include a first fixing plate 5 and a slider 6. The first fixing plate 5 is welded to the end of the telescopic beam 3 away from the first slide groove 21. The upper end face of the first fixing plate 5 is flush with the upper end face of the main beam 2. A second slide groove 51 matching the slider 6 is opened on the first fixing plate 5. The slider 6 is slidably connected in the second slide groove 51.

[0034] As the telescopic beam 3 slides out of the first chute 21, the first fixed plate 5 gradually moves away from the main beam 2, and the second chute 51 drives the stop beam 4 to slide on the main beam 2. Because the length of the telescopic beam 3 sliding out of the first chute 21 is equal to the length of the stop beam 4, after the telescopic beam 3 slides out, the stop beam 4 also detaches from the main beam 2. Under the action of gravity, the slider 6 will slide into the second chute 51, so that the stop beam 4 will fall onto the telescopic beam 3. At this time, the upper end face of the stop beam 4 can be flush with the upper end face of the main beam 2. When the first hydraulic cylinder 11 lifts the main beam 2, the main beam 2 and the stop beam 4 can fit against the top of the coal seam, thereby supporting the top of the coal seam and preventing the coal seam above the telescopic beam 3 from sinking, which would prevent the base 1 from advancing smoothly.

[0035] Furthermore, a third inclined surface 41 is provided on the stop beam 4, and a first inclined surface 22 matching the third inclined surface 41 is provided on the main beam 2. As the stop beam 4 slides outward on the main beam 2, the third inclined surface 41 on the stop beam 4 will wedge with the first inclined surface 22, so that the stop beam 4 gradually descends from the main beam 2 onto the telescopic beam 3.

[0036] Meanwhile, when the hydraulic jacking support for mine construction needs to be moved to a new coal seam for mining, the piston rod of the second hydraulic cylinder 23 retracts and the telescopic beam 3 gradually slides into the first chute 21. During this process, the third inclined surface 41 and the first inclined surface 22 wedge together, and the plug beam 4 can slide onto the main beam 2 again, thereby reducing the overall length of the hydraulic jacking support for mine construction and facilitating its transfer in the mine.

[0037] Furthermore, a wedge-shaped block 42 is integrally formed on the stop beam 4, and a second inclined surface 31 matching the wedge-shaped block 42 is provided on the telescopic beam 3. Specifically, when transferring the hydraulic jacking support for mine construction, the wedge-shaped block 42 can fit against the first inclined surface 22 to prevent coal slag from falling onto the first inclined surface 22 during the transfer process, thus preventing the third inclined surface 41 from fitting against the first inclined surface 22. Because the third inclined surface 41 faces downwards, coal slag cannot fall onto the third inclined surface 41. In addition, the second inclined surface 31 enters the first chute 21, and the outer wall of the main beam 2 and the first fixing plate 5 seal the opening of the first chute 21, so the second inclined surface 31 will not be affected by coal slag.

[0038] It should be noted that when the plug beam 4 is placed on the telescopic beam 3, the first inclined surface 22 and the third inclined surface 41 are in contact, and the wedge block 42 and the second inclined surface 31 are in contact, which can ensure that the upper end surface of the plug beam 4 and the main beam 2 are flush.

[0039] As shown in Figures 2 to 4, to prevent the slider 6 from detaching from the second slide groove 51 and causing the stop beam 4 to fall off the main beam 2, a limiting block 61 is integrally formed on the slider 6. A limiting groove 52 matching the limiting block 61 is formed on the groove wall of the second slide groove 51, and the limiting block 61 is slidably connected in the limiting groove 52. The limiting groove 52 limits the limiting block 61, preventing the slider 6 from completely sliding out of the second slide groove 51, thereby ensuring the stability of the stop beam 4.

[0040] Preferably, the distance that the limiting block 61 can slide within the limiting groove 52 is the same as the distance between the upper end face of the telescopic beam 3 and the upper end face of the main beam 2, ensuring that the plug beam 4 fits against the main beam 2 when it is on the main beam 2, and ensuring the stability of the plug beam 4 when the hydraulic jacking support for mine construction is transported or transferred.

[0041] Furthermore, the width of the plug beam 4 is equal to the width of the main beam 2, so that the protective width of the telescopic beam 3 is equal to that of the plug beam 4.

[0042] As shown in Figures 5 to 7, a first connecting plate 231 is welded to the piston rod of the second hydraulic cylinder 23, and the first connecting plate 231 is detachably connected to the first fixed plate 5. A second fixed plate 7 is detachably connected to the main beam 2, and a pair of third connecting plates 71 are welded to the second fixed plate 7. The second hydraulic cylinder 23 is welded to the second fixed plate 7.

[0043] Specifically, the first connecting plate 231 is bolted to the first fixing plate 5, and the third connecting plate 71 is bolted to the lower plate of the main beam 2. When the second hydraulic cylinder 23 malfunctions, the second fixing plate 7 and the second hydraulic cylinder 23 can be removed and replaced by disassembling the bolts.

[0044] Furthermore, there is a pair of second fixing plates 7. The second hydraulic cylinder 23 is welded to the second fixing plate 7 away from the first fixing plate 5. The second fixing plate 7 closer to the first fixing plate 5 has a through hole 702 that matches the second hydraulic cylinder 23. The second fixing plate 7 closer to the first fixing plate 5 can provide a certain support for the front end of the second hydraulic cylinder 23, ensuring the stability of the second hydraulic cylinder 23.

[0045] It is worth noting that because the coal mining machine operates below the main beam 2 and the telescopic beam 3, coal chunks may splash onto the piston rod of the second hydraulic cylinder 23 during mining, increasing the possibility of damage to the second hydraulic cylinder 23. Furthermore, a second connecting plate 53 is welded to the first fixed plate 5, and a protective frame 8 is bolted to the second connecting plate 53. A through groove 701 matching the protective frame 8 is provided on the second fixed plate 7 near the first fixed plate 5. The protective frame 8 passes through the through groove 701 and is slidably connected within the through groove 701.

[0046] Specifically, when the piston rod of the second hydraulic cylinder 23 extends, the first fixed plate 5 drives the protective frame 8 to move. The protective frame 8 forms a protection below the piston rod of the second hydraulic cylinder 23, which can block most of the coal chunks that splash onto the piston rod of the second hydraulic cylinder 23, thus providing protection for the piston rod of the second hydraulic cylinder 23.

[0047] It should be noted that because the protective frame 8 cannot fit snugly against the telescopic beam 3, some coal may accumulate inside the protective frame 8 after a long period of use. By removing the bolts on the protective frame 8 and separating the protective frame 8 from the first fixing plate 5, the coal inside the protective frame 8 can be cleaned.

[0048] In operation, as shown in Figures 1 to 6, the piston rod on the second hydraulic cylinder 23 extends, pushing the first fixed plate 5 away from the main beam 2. The telescopic beam 3 slides outward from the first sliding groove 21. When the length of the telescopic beam 3 sliding off the main beam 2 is equal to the length of the stop beam 4, the second hydraulic cylinder 23 stops working, and the stop beam 4 falls onto the telescopic beam 3 with its upper end face flush with the upper end face of the main beam 2. At this time, the piston rod of the first hydraulic cylinder 11 extends, and the main beam 2 and the stop beam 4 can press against the top of the coal seam, forming a protective zone below the main beam 2 and the telescopic beam 3, providing protection for the coal mining machine.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydraulic jacking support for mine construction, comprising a base, a first hydraulic cylinder and a main beam mounted on the base, a first sliding groove formed on the main beam, a telescopic beam slidably connected within the first sliding groove, and a second hydraulic cylinder mounted on the main beam for driving the telescopic beam to slide, characterized in that... Also includes: A stop beam, which is slidably connected to the main beam, has a thickness equal to the height difference between the telescopic beam and the main beam, and a length equal to the length by which the telescopic beam slides out of the first groove; and a connecting assembly, which is used to enable the stop beam to slide on the main beam.

2. The hydraulic jacking support for mine construction according to claim 1, characterized in that, The connecting assembly includes a first fixing plate and a slider. The first fixing plate is fixedly connected to the telescopic beam. The upper end face of the first fixing plate is flush with the upper end face of the main beam. A second sliding groove matching the slider is provided on the first fixing plate. The slider is slidably connected in the second sliding groove.

3. A hydraulic jacking support for mine construction according to claim 2, characterized in that, The stop beam has a third inclined surface, and the main beam has a first inclined surface that matches the third inclined surface.

4. A hydraulic jacking support for mine construction according to claim 3, characterized in that, A wedge-shaped block is fixedly connected to the stop beam, and a second inclined surface matching the wedge-shaped block is provided on the telescopic beam.

5. A hydraulic jacking support for mine construction according to claim 2, characterized in that, The slider has an integrally formed limiting block, and the second slide groove has a limiting groove that matches the limiting block. The limiting block is slidably connected in the limiting groove.

6. A hydraulic jacking support for mine construction according to claim 2, characterized in that, The width of the stop beam is equal to the width of the main beam.

7. A hydraulic jacking support for mine construction according to claim 2, characterized in that, A first connecting plate is fixedly connected to the piston rod of the second hydraulic cylinder, and the first connecting plate is detachably connected to the first fixed plate.

8. A hydraulic jacking support for mine construction according to claim 7, characterized in that, A second fixing plate is detachably connected to the main beam, and a pair of third connecting plates are fixedly connected to the second fixing plate. The second hydraulic cylinder is fixedly connected to the second fixing plate.

9. A hydraulic jacking support for mine construction according to claim 8, characterized in that, The second fixing plate is a pair, and the second hydraulic cylinder is welded to a second fixing plate away from the first fixing plate. The second fixing plate near the first fixing plate has a through hole that matches the second hydraulic cylinder.

10. A hydraulic jacking support for mine construction according to claim 9, characterized in that, A second connecting plate is fixedly connected to the first fixing plate, and a protective frame is detachably connected to the second connecting plate. A through groove matching the protective frame is opened on the second fixing plate near the first fixing plate, and the protective frame passes through the through groove and is slidably connected in the through groove.

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