Hydraulic support with totally-enclosed inner telescopic beam
By designing a fully enclosed internal telescopic beam and side protection device, the safety hazard of coal gangue falling into the roof during the mining of soft coal seams was solved, achieving fully enclosed gangue blocking and timely support, thus improving the safety and efficiency of coal mining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-03
AI Technical Summary
In the mining of soft coal seams, there are gaps after the telescopic beams of traditional hydraulic supports extend, which makes it easy for coal gangue from the roof to fall into the machine passage space, posing a safety hazard.
Design a fully enclosed internal telescopic beam, including a middle retaining plate, a side retaining plate, and an outer retaining plate, with the width gradually decreasing. The outer retaining plate encloses the top side of the hydraulic support and is equipped with a shovel plate and a side protection device to achieve fully enclosed retaining of coal and prevent coal and gangue from falling into the roof.
It achieves fully enclosed rock blocking by telescopic beams during the mining of soft coal seams, preventing roof coal and gangue from falling into the machine passage space, improving mining safety, and reducing the probability of coal wall spalling through timely support by the side protection device.
Smart Images
Figure CN224079169U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coal mining machinery manufacturing technology, and in particular to a hydraulic support with a fully enclosed internal telescopic beam. Background Technology
[0002] The term "three-soft coal seam" refers to the soft roof strata, soft main coal seam, and soft floor strata encountered during coal mining. Generally, coal seams exhibiting these three characteristics have weak roof and floor strata, with well-developed fractures and complex geological structures. Due to the presence of a soft roof, traditional hydraulic supports have gaps after the telescopic beam extends, failing to achieve complete sealing against rockfall. This allows roof rock to easily fall into the machine's passageway through these gaps, posing a safety hazard. Utility Model Content
[0003] To address the aforementioned shortcomings, the technical problem to be solved by this utility model is to provide a hydraulic support with a fully enclosed internal telescopic beam. During the mining of soft coal seams, the telescopic beam can achieve a fully enclosed blockage of coal and gangue after it extends, preventing roof coal and gangue from easily falling into the machine passage space through the gaps, thus improving the safety of the operation.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0005] A hydraulic support with a fully enclosed inner telescopic beam includes a top beam, the front end of which is provided with a fully enclosed inner telescopic beam, and the front end of which is provided with a shovel plate; the fully enclosed inner telescopic beam includes a central retaining plate, two side retaining plates respectively disposed on both sides of the central retaining plate, and two outer side retaining plates, the two outer side retaining plates being disposed on the outer sides of the two side retaining plates, the width of the central retaining plate being greater than the width of the side retaining plates, the width of the side retaining plates being greater than the width of the outer side retaining plates, and the outer edge of the side of the outer side retaining plates being close to the outer edge of the side of the top beam.
[0006] The preferred embodiment is that the outer retaining plate on each side is a box-shaped structure.
[0007] In a preferred embodiment, the front end of the top beam is provided with an end plate, and the two sides of the end plate are respectively provided with grooves; the rear end of the outer retaining plate extends into the top beam through the corresponding groove.
[0008] In a preferred embodiment, cover plates are provided on both sides of the front end of the top beam, and the cover plates are connected to the side retaining plates.
[0009] In a preferred embodiment, reinforcing ribs are provided on both sides of the front end of the top beam, and the reinforcing ribs are connected to the side retaining slag plate.
[0010] In a preferred embodiment, the cover plate is located inside the end plate, and / or the cover plate is arranged parallel to the end plate.
[0011] The preferred embodiment is that each side retaining wall plate is a box-shaped structure.
[0012] The beneficial effects of this utility model after adopting the above technical solution are:
[0013] The hydraulic support with a fully enclosed inner telescopic beam of this utility model includes a top beam, the front end of which is provided with a fully enclosed inner telescopic beam, and the front end of the fully enclosed inner telescopic beam is provided with a shovel plate; the fully enclosed inner telescopic beam includes a central baffle plate, two side baffle plates respectively disposed on both sides of the central baffle plate, and two outer side baffle plates, the two outer side baffle plates being disposed on the outer sides of the two side baffle plates, the width of the central baffle plate being greater than the width of the side baffle plates, and the width of the side baffle plates being greater than the width of the outer side baffle plates, the outer side baffle plates being... The outer edge of the gangue plate is close to the outer edge of the top beam, meaning the width of the fully enclosed inner telescopic beam is sufficiently wide. When the telescopic beam extends, the outer gangue plate seals the top side of the hydraulic support, achieving a fully enclosed gangue barrier after the telescopic beam extends during the mining of soft coal seams. This allows the coal mining machine to remove the remaining top coal after mining below this invention via the front shovel, preventing roof coal and gangue from easily falling into the machine passageway through gaps, thus improving operational safety. Furthermore, this invention has the advantages of simple structure and ease of implementation. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the hydraulic support with a fully enclosed internal telescopic beam in this utility model;
[0015] Figure 2 This is a partial schematic diagram of the hydraulic support in this utility model;
[0016] Figure 3 This is a side view of the fully enclosed internal telescopic beam in this utility model;
[0017] Figure 4 This is a schematic diagram of the hydraulic support structure in the embodiment;
[0018] In the diagram: 1-Fully enclosed inner telescopic beam, 10-Middle retaining bar, 11-Side retaining bar, 12-Outer side retaining bar, 13-Telescopic beam, 2-Top beam, 20-Outer main reinforcement, 21-Groove, 3-Shovel plate, 4-End plate, 5-Cover plate, 6-Side protection device, 60-Primary side protection mechanism, 61-Secondary side protection mechanism. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0020] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.
[0021] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.
[0022] like Figures 1 to 4 As shown in the figure, a hydraulic support with a fully enclosed inner telescopic beam includes a top beam 2, a fully enclosed inner telescopic beam 1 is provided at the front end of the top beam 2, and a shovel plate 3 is provided at the front end of the fully enclosed inner telescopic beam 1; the fully enclosed telescopic beam of this utility model is also provided with a side protection device 6, which includes a primary side protection mechanism 60 and a secondary side protection mechanism 61.
[0023] The fully enclosed inner telescopic beam 1 includes a telescopic beam 13, and a central rock-blocking plate 10, two side rock-blocking plates 11, and two outer rock-blocking plates 12 respectively installed on the telescopic beam 13. The two side rock-blocking plates 11 are respectively installed on both sides of the central rock-blocking plate 10, and the two outer rock-blocking plates 12 are respectively installed on the outer sides of the two side rock-blocking plates 11. The width of the central rock-blocking plate 10 is greater than the width of the side rock-blocking plates 11, and the width of the side rock-blocking plates 11 is greater than the width of the outer rock-blocking plates 12. The outer edge of the side of the outer rock-blocking plate 12 is close to the outer edge of the side of the top beam 2. That is, the width of the fully enclosed inner telescopic beam 1 is wide enough. When the telescopic beam 13 extends, the outer rock-blocking plate 12 closes the top side of the hydraulic support, so that the telescopic beam 13 can achieve full-enclosure rock-blocking after it extends during the mining of the three soft coal seams.
[0024] The coal mining machine mines coal below this utility model. The remaining top coal can be shoveled off by the front shovel plate 3. During the shoveling process, the side protection device 6 can quickly extend to provide timely support and prevent coal wall collapse. Furthermore, under the action of the fully enclosed internal telescopic beam, it can prevent coal gangue from falling into the machine passage space through the gaps, thus improving the safety of the operation.
[0025] like Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, each outer retaining plate 12 is a box-shaped structure. Simultaneously, an end plate 4 is provided at the front end of the top beam 2, with grooves 21 on both sides of the end plate 4. The rear end of the outer retaining plate 12 extends into the top beam 2 through the corresponding groove 21. Because the outer retaining plate 12 is a box-shaped structure, its structural strength is increased. Furthermore, since the rear end of the outer retaining plate 12 is located within the top beam 2, its vertical movement is restricted, ensuring the retaining effect. Additionally, the width of the side retaining plate 11 can be appropriately narrowed to reserve structural space for the outer retaining plate 12, and the front outer main reinforcement 20 of the top beam 2 is moved inward to reserve structural space for the outer retaining plate 12.
[0026] In a preferred embodiment, each side retaining plate 11 is a box-shaped structure, which increases the structural strength of the fully enclosed inner telescopic beam 1 and improves the retaining effect.
[0027] like Figure 4 As shown, in this embodiment, cover plates 5 are respectively provided on both sides of the front end of the top beam 2. The cover plates 5 are connected to the side retaining plates 11. Specifically, the cover plates 5 are located inside the end plates 4, and / or the cover plates 5 and the end plates 4 are arranged in parallel. At the same time, reinforcing ribs are respectively provided on both sides of the front end of the top beam 2. The reinforcing ribs are connected to the side retaining plates 11, which further increases the structural strength and improves the retaining effect.
[0028] like Figure 1 and Figure 2 As shown, the primary side protection mechanism 60 of this utility model includes a primary side protection plate and a side protection tilting jack that drives the primary side protection plate to rotate. The rear end of the primary side protection plate is hinged to the telescopic beam 13. One end of the side protection tilting jack is hinged to the telescopic beam 13, and the other end of the side protection tilting jack is hinged to the primary side protection plate.
[0029] The secondary side protection mechanism 61 includes a secondary side protection plate and a side protection telescopic jack that drives the secondary side protection plate to extend and retract. The secondary side protection plate is installed on the primary side protection plate via a sliding structure. One end of the side protection telescopic jack is fixed to the primary side protection plate, and the other end of the side protection telescopic jack is fixed to the secondary side protection plate. The sliding structure includes a slide rail on the primary side protection plate and multiple sliding limit rods installed in the slide rail. Each sliding limit rod is fixedly connected to the secondary side protection plate.
[0030] like Figures 1 to 4 As shown in the figure, the hydraulic support with a fully enclosed inner telescopic beam of this utility model can close the top side of the hydraulic support when the fully enclosed inner telescopic beam 1 extends during the mining process. There are no gaps, so when the shovel 3 shovels down the top coal, the top coal and gangue will not fall into the machine space through the gaps. This achieves fully enclosed gangue blocking, thereby improving the safety of mining.
[0031] Simultaneously, in use, this utility model allows the side support tilting jacks to rotate at corresponding angles according to actual support needs, tilting the primary and secondary side support plates at corresponding angles. The side support extension jacks then operate, causing the secondary side support plate to slide along the track, extending the primary side support plate and bringing the side support device 6 to an effective support position. Because this utility model uses coal cutting under the beam, it reduces the probability of roof collapse after coal cutting. Furthermore, because the side support device 6 provides effective and timely support, it solves the problem of coal wall spalling.
[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made within the spirit and principles of the present utility model, or improvements to a hydraulic support with a fully enclosed internal telescopic beam, should be included within the protection scope of the present utility model.
Claims
1. A hydraulic support with a fully enclosed inner telescopic beam, comprising a top beam, characterized in that, The front end of the roof beam is provided with a fully-enclosed inner telescopic beam, and the front end of the fully-enclosed inner telescopic beam is provided with a shovel plate. The fully-enclosed inner telescopic beam comprises a middle gangue blocking plate, two side gangue blocking plates which are respectively arranged on the two sides of the middle gangue blocking plate, and two outer side gangue blocking plates which are respectively arranged on the outer sides of the two side gangue blocking plates, the width of the middle gangue blocking plate is greater than the width of the side gangue blocking plate, the width of the side gangue blocking plate is greater than the width of the outer side gangue blocking plate, and the outer edge of the side of the outer side gangue blocking plate is close to the outer edge of the side of the roof beam.
2. The hydraulic support with fully enclosed inner telescopic beams according to claim 1, characterized in that, Each of the outer side gangue blocking plates is a box structure.
3. The hydraulic support with fully enclosed inner telescopic beams according to claim 2, characterized in that, The front end of the roof beam is provided with an end plate, and the two sides of the end plate are respectively provided with grooves. The rear end of the outer side gangue blocking plate penetrates through the corresponding side groove and extends into the roof beam.
4. The hydraulic support with fully enclosed inner telescopic beams according to claim 3, characterized in that, The front end of the roof beam is respectively provided with a cover plate on the two sides, and the cover plate is connected with the side gangue blocking plate.
5. The hydraulic support with fully enclosed inner telescopic beams according to claim 4, characterized in that, The front end of the roof beam is respectively provided with a reinforcing rib on the two sides, and the reinforcing rib is connected with the side gangue blocking plate.
6. The hydraulic support with fully enclosed inner telescopic beams according to claim 4, characterized in that, The cover plate is arranged on the inner side of the end plate, and / or the cover plate is arranged in parallel with the end plate.
7. The hydraulic support having a fully enclosed inner telescopic beam according to claim 1, characterized in that, Each of the side gangue blocking plates is a box structure.