Hydraulic support

Abstract

The utility model provides a kind of hydraulic support.The hydraulic support includes: roof beam, side guard plate, first arc plate, second arc plate and third arc plate.The side guard plate is arranged on both sides of the roof beam.The first arc plate is arranged on the roof beam.The second arc plate is arranged on the side guard plate.The third arc plate is arranged between the first arc plate and the second arc plate, and the third arc plate is slidably connected with the first arc plate and the second arc plate.By setting three arc plates to form a sliding connection shielding system, the problem of the empty area formed between the roof beam, the side guard plate and the shield beam when the side guard plate is open is effectively solved.By forming a continuous shield between the roof beam and the shield beam, the safety of the underground workers is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic supports, and more specifically, to a hydraulic support. Background Technology

[0002] In the existing technology, the main reinforcement of the hydraulic support is not covered with a plate. When mining coal normally, the side guard plate of the top beam is in the open state, and there will be a gap between the side guard plate and the top beam. There is a possibility of falling gangue in the gap, and workers walking in the gap may be injured by falling gangue.

[0003] Therefore, a hydraulic support capable of filling gaps and preventing rockfalls has become an urgent problem to be solved. Utility Model Content

[0004] Therefore, the first objective of this utility model is to provide a hydraulic support.

[0005] In view of the above, the first aspect of the present invention provides a hydraulic support. The hydraulic support includes: a top beam, side guard plates, a first arc-shaped plate, a second arc-shaped plate, and a third arc-shaped plate. The protective beam and the top beam are rotatably connected. The side guard plates are disposed on both sides of the top beam. The first arc-shaped plate is disposed on the top beam. The second arc-shaped plate is disposed on the side guard plates. The third arc-shaped plate is disposed between the first and second arc-shaped plates, and is slidably connected to both the first and second arc-shaped plates.

[0006] In this design, the hydraulic support includes a top beam, side guard plates, a first arc-shaped plate, a second arc-shaped plate, and a third arc-shaped plate. The side guard plates are located on both sides of the top beam. The first arc-shaped plate is mounted on the top beam. The second arc-shaped plate is mounted on the side guard plates. The third arc-shaped plate is positioned between the first and second arc-shaped plates, and is slidably connected to both the first and second arc-shaped plates. These three arc-shaped plates (first, second, and third arc-shaped plates) form a slidingly connected shielding system, effectively solving the problem of a gap between the top beam, side guard plates, and the shield beam when the side guard plates are open. By creating a continuous shield between the top beam and the shield beam, it prevents rock from sliding laterally, significantly improving the safety of personnel working underground.

[0007] In some possible designs, the first arc-shaped plate includes a sliding connection. The third arc-shaped plate includes a slider that is slidably connected to the sliding connection.

[0008] In this design, the sliding connection makes the relative movement between the third arc plate and the first arc plate smoother, reducing the frictional resistance when the side guard plate opens and closes.

[0009] In some possible designs, the sliding connection includes a first opening facing the second arc-shaped plate.

[0010] In this design, the sliding connection includes a first opening facing the second arc-shaped plate. Since the slider is fixedly connected to the third arc-shaped plate, the sliding connection needs to have the first opening so that the slider can be installed inside the sliding connection. At the same time, the first opening acts as a track to define the direction of the slider.

[0011] In some possible designs, the sliding connection also includes a first limiting block disposed at one end of the sliding connection. One end of the slider has a protrusion that cooperates with the first limiting block, and when the side guard plate is in the first position, the first limiting block can limit the protrusion.

[0012] In this design, the cooperation between the first limiting block and the protrusion achieves mechanical limiting of the side guard plate in the first position, avoiding excessive displacement caused by pressure fluctuations in the hydraulic system.

[0013] In some possible designs, the hydraulic support also includes: at least one pin. The third arc-shaped plate also includes at least one pin hole through which the pin can pass. The second arc-shaped plate also includes a second opening through which the pin passes and slides.

[0014] In this design, the hydraulic support also includes at least one pin. The third arc-shaped plate also includes at least one pin hole through which the pin can pass. The second arc-shaped plate also includes a second opening through which the pin passes and slides. The pin is fixed to the pin hole and passes through the second opening, sliding within it. The second opening limits the movement of the third arc-shaped plate, preventing excessive displacement and defining the sliding direction of the third arc-shaped plate.

[0015] In some possible designs, the number of pins is two.

[0016] In this design, the use of two pins ensures more balanced stress on the third arc-shaped plate, preventing the torsional deformation caused by uneven loading in a single-pin structure. The spacing between the two pins can be optimized according to the width of the shielding area, creating a stable torque balance and improving the system's durability under high-frequency opening and closing conditions of the side guards. Under extreme conditions, the two pins can work together to distribute impact loads across multiple contact surfaces of the second and third arc-shaped plates, reducing localized stress peaks. Furthermore, the symmetrical design of the two pins simplifies the assembly process, allowing on-site workers to quickly install the system without needing to distinguish directions, reducing the risk of misoperation.

[0017] In some possible designs, the hydraulic support also includes a cotter pin, mounted on a pin shaft, for securing the second and third arc-shaped plates.

[0018] In this design, the introduction of cotter pins completely solves the problem of axial movement of the pin shaft that may occur under long-term vibration. Its elastic opening structure can produce slight deformation when subjected to impact, avoiding pin shaft breakage caused by rigid locking.

[0019] In some possible designs, the first arc-shaped plate also includes a recess corresponding to the pin. The pin includes a pin head, which is positioned within the recess when the side guard plate is in the second position.

[0020] In this design, the recessed portion and the pin head work together to achieve concealed storage of the side guard plate in the second position. After the pin head is embedded in the recessed portion, there are no protruding parts on the surface of the curved plate, avoiding the risk of scratching with hydraulic hoses or pedestrians. The depth of the recessed portion has been calculated to ensure that a safe clearance of 1mm-2mm is maintained even at the extreme position of the pin head.

[0021] In some possible designs, the thickness of the second curved plate is greater than or equal to 5 mm and less than or equal to 15 mm.

[0022] In this design, the thickness of the second arc-shaped plate is greater than or equal to 5mm and less than or equal to 15mm, which ensures bending strength while avoiding material waste. Thicker plates (e.g., 15mm) are suitable for high-extraction, high-pressure working faces, resisting impact loads during cyclic pressing; thinner plates (e.g., 5mm) are suitable for thin coal seams or lightweight supports, accommodating lightweight requirements. The thickness range also matches the specifications of commonly used steel plates for existing hydraulic supports, eliminating the need for customized special materials and reducing procurement costs. Furthermore, the reasonable thickness design allows for controllable heat input during welding of the second arc-shaped plate, reducing assembly errors caused by welding deformation.

[0023] In some possible designs, the hydraulic support also includes a hydraulic cylinder, one end of which is connected to the top beam and the other end of which is connected to the side guard plate.

[0024] In this design, the hydraulic support also includes a hydraulic cylinder, one end of which is connected to the top beam and the other end of which is connected to the side guard plate. When the hydraulic cylinder extends, the side guard plate is in the first position, and when the hydraulic cylinder retracts, the side guard plate is in the second position.

[0025] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a hydraulic support according to an embodiment of the present invention;

[0028] Figure 2 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention;

[0029] Figure 3 This is a second partial schematic diagram of a hydraulic support according to an embodiment of the present invention;

[0030] Figure 4 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention;

[0031] Figure 5 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention;

[0032] Figure 6 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention;

[0033] Figure 7 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention;

[0034] Figure 8 This is a partial schematic diagram (seventh) of a hydraulic support according to an embodiment of this utility model;

[0035] Figure 9 This is a partial schematic diagram of a hydraulic support according to one embodiment of the present invention.

[0036] in, Figures 1 to 9 The correspondence between the reference numerals and the component names is as follows:

[0037] 1. Hydraulic support; 10. Top beam; 11. Protective beam; 12. Side guard plate; 13. Hydraulic cylinder; 14. First arc plate; 141. Recess; 15. Second arc plate; 151. Second opening; 16. Third arc plate; 161. Sliding member; 162. Protrusion; 163. Pin hole; 17. Sliding connection; 171. First opening; 173. First limiting block; 18. Pin; 181. Pin head; 19. Cotter pin. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] The first aspect of this utility model provides a hydraulic support 1, such as... Figure 1 and Figure 2 As shown, the hydraulic support 1 includes: a top beam 10, side guard plates 12, a first arc-shaped plate 14, a second arc-shaped plate 15, and a third arc-shaped plate 16. The side guard plates 12 are located on both sides of the top beam 10. The first arc-shaped plate 14 is located on the top beam 10. The second arc-shaped plate 15 is located on the side guard plates 12. The third arc-shaped plate 16 is located between the first arc-shaped plate 14 and the second arc-shaped plate 15, and is slidably connected to both the first and second arc-shaped plates 14 and 15.

[0040] In this embodiment, the hydraulic support 1 includes: a top beam 10, a shield beam 11, side guard plates 12, a first arc-shaped plate 14, a second arc-shaped plate 15, and a third arc-shaped plate 16. The shield beam 11 is rotatably connected to the top beam 10. The side guard plates 12 are located on both sides of the top beam 10. The first arc-shaped plate 14 is located on the top beam 10. The second arc-shaped plate 15 is located on the side guard plate 12. The third arc-shaped plate 16 is located between the first arc-shaped plate 14 and the second arc-shaped plate 15, and is slidably connected to both the first and second arc-shaped plates 14 and 15. The three arc-shaped plates (first arc-shaped plate 14, second arc-shaped plate 15, and third arc-shaped plate 16) form a slidingly connected shielding system, effectively solving the problem of a gap between the top beam 10 and the side guard plate 12 when the side guard plate 12 is open. By forming a continuous shield between the top beam 10 and the shield beam 11, the safety of underground workers is significantly improved by preventing gangue from sliding down from the side.

[0041] The hydraulic support 1 also includes a shield beam 11. The shield beam 11 and the top beam 10 are rotatably connected. When the top beam 10 rotates relative to the shield beam 11 to a horizontal or near-horizontal state, the side guard plate 12 will open, and the hydraulic support 1 will support the tunnel roof. At this time, a drop zone will be formed at the point where the shield beam 11 and the top beam 10 rotate, and gangue may fall into the drop zone.

[0042] In some possible embodiments, such as Figure 3As shown, the first arc-shaped plate 14 includes a sliding connection portion 17. The third arc-shaped plate 16 includes a slider 161, which is slidably connected to the sliding connection portion 17.

[0043] In this embodiment, the design of the sliding connection 17 makes the relative movement between the third arc plate 16 and the first arc plate 14 smoother, reducing the frictional resistance when the side guard plate 12 opens and closes.

[0044] In some possible embodiments, such as Figure 5 and Figure 8 As shown, the sliding connection 17 includes a first opening 171, which faces the second arc-shaped plate 15.

[0045] In this embodiment, the sliding connection portion 17 includes a first opening 171 facing the second arc-shaped plate 15. Since the slider 161 is fixedly connected to the third arc-shaped plate 16, the sliding connection portion 17 needs to have the first opening 171 so that the slider 161 can be installed in the sliding connection portion 17. At the same time, the first opening 171 is equivalent to a track that can define the direction of the slider 161.

[0046] In some possible embodiments, such as Figure 3 and Figure 9 As shown, the sliding connection portion 17 further includes a first limiting block 173, which is disposed at one end of the sliding connection portion 17. One end of the slider 161 is provided with a protrusion 162, which cooperates with the first limiting block 173. When the side guard plate 12 is in the first position, the first limiting block 173 can limit the protrusion 162.

[0047] In this embodiment, the cooperation between the first limiting block 173 and the protrusion 162 achieves mechanical limiting of the side guard plate 12 at the first position, avoiding excessive displacement caused by hydraulic system pressure fluctuations.

[0048] In some possible embodiments, such as Figure 4 , Figure 7 and Figure 9 As shown, the hydraulic support 1 further includes at least one pin 18. The third arc-shaped plate 16 also includes at least one pin hole 163 through which the pin 18 can pass. The second arc-shaped plate 15 also includes a second opening 151 through which the pin 18 passes and slides within the second opening 151.

[0049] In this embodiment, the hydraulic support 1 further includes at least one pin 18. The third arc-shaped plate 16 also includes at least one pin hole 163 through which the pin 18 can pass. The second arc-shaped plate 15 also includes a second opening 151 through which the pin 18 passes and slides. The pin 18 is fixed to the pin hole 163 and passes through the second opening 151, sliding within the second opening 151. The second opening 151 limits the movement of the third arc-shaped plate 16, preventing excessive displacement and defining the sliding direction of the third arc-shaped plate 16.

[0050] In some possible embodiments, the number of pins 18 is two.

[0051] In this embodiment, the arrangement of two pins 18 ensures a more balanced stress distribution on the third arc-shaped plate 16, preventing the arc-shaped plate from twisting and deforming due to uneven loading, as is common in single-pin structures. The spacing between the two pins can be optimized based on the width of the shielding area, creating a stable torque balance and improving the system's durability under high-frequency opening and closing conditions of the side guard plate 12. Under extreme conditions, the two pins can work together to distribute the impact load across multiple contact surfaces of the second and third arc-shaped plates 15 and 16, reducing local stress peaks. Furthermore, the symmetrical design of the two pins simplifies the assembly process, allowing on-site workers to quickly install the plate without needing to distinguish directions, reducing the risk of misoperation.

[0052] In some possible embodiments, such as Figure 7 As shown, the hydraulic support 1 also includes a cotter pin 19, which is disposed on the pin shaft 18 and is used to fix the second arc plate 15 and the third arc plate 16.

[0053] In this embodiment, the introduction of the cotter pin 19 completely solves the problem of axial movement of the pin shaft that may occur under long-term vibration. Its elastic opening structure can produce slight deformation when subjected to impact, avoiding pin shaft breakage caused by rigid locking.

[0054] In some possible embodiments, such as Figure 3 and Figure 6 As shown, the first arc-shaped plate 14 also includes a recess 141, which is provided corresponding to the pin 18. The pin 18 includes a pin head 181, which is located in the recess 141 when the side guard plate 12 is in the second position.

[0055] In this embodiment, the engagement of the recess 141 and the pin head 181 enables the side guard plate 12 to be concealed in the second position. After the pin head 181 is embedded in the recess 141, there are no protruding parts on the surface of the arc-shaped plate, avoiding the risk of scratching with hydraulic hoses or pedestrians. The depth of the recess 141 is calculated to ensure that the pin head 181 still retains a safe clearance of 1mm-2mm even at its extreme position.

[0056] In some possible embodiments, the thickness of the second arc-shaped plate 15 is greater than or equal to 5 mm and less than or equal to 15 mm.

[0057] In this embodiment, the thickness of the second arc-shaped plate 15 is greater than or equal to 5 mm and less than or equal to 15 mm, which ensures bending strength while avoiding material waste. Thicker plates (e.g., 15 mm) are suitable for high-extraction, high-pressure working faces, and can withstand impact loads during cyclic pressing; thinner plates (e.g., 5 mm) are suitable for thin coal seams or lightweight supports, taking into account the need for lightweight construction. The thickness range also matches the specifications of commonly used steel plates for existing hydraulic supports, eliminating the need for customized special materials and reducing procurement costs. Furthermore, the reasonable thickness design allows for controllable heat input during welding of the second arc-shaped plate 15, reducing assembly errors caused by welding deformation.

[0058] In some possible embodiments, the hydraulic support 1 further includes a hydraulic cylinder 13, one end of which is connected to the top beam 10, and the other end of which is connected to the side guard plate 12.

[0059] In this embodiment, the hydraulic support 1 further includes a hydraulic cylinder 13, one end of which is connected to the top beam 10, and the other end of which is connected to the side guard plate 12. When the hydraulic cylinder 13 extends, the side guard plate 12 is in a first position, and when the hydraulic cylinder 13 retracts, the side guard plate 12 is in a second position.

[0060] In some possible embodiments, a sliding connection 17 is welded to the top beam 10 of the hydraulic support 1, and a first arc plate 14 is welded to the sliding connection 17. The first arc plate 14 has two U-shaped openings, which are mainly used to restrict the movement of the third arc plate 16 when the side guard plate 12 is retracted. The sliding connection 17 welded above the first arc plate 14 is a hollow steel pipe with an elongated opening and a plug welded to one end. The third arc plate 16 has a pin hole 163 that allows the pin 18 to pass through. A semi-circular pin (i.e., a sliding member 161) is welded above the third arc plate 16. The end of the sliding member 161 near the main reinforcement of the top beam 10 is circular and passes through a hollow steel pipe on the first arc plate 14. The protrusion 162 on the sliding member 161 cooperates with the first limiting block 173 on the first arc plate 14 to limit the displacement of the third arc plate 16 in the direction of the side guard plate 12 when the side guard plate 12 is opened, preventing the third arc plate 16 from falling off during the process. The second arc plate 15 is pressed onto the side guard plate 12. The second arc plate 15 has an elongated hole (second opening 151) and is connected to the third arc plate 16 by the pin 18. When the side guard plate 12 is opened, the third arc plate 16 is opened through the pin 18. When it is retracted, the third arc plate 16 is pushed back by the side guard plate 12. The pin 18 is locked with a flat washer and a cotter pin 19.

[0061] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention.

[0062] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0065] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic support, characterized in that, include: Top beam; Side guard plates are installed on both sides of the top beam; The first arc-shaped plate is mounted on the top beam; A second arc-shaped plate is provided on the side guard plate; A third arc-shaped plate is disposed between the first arc-shaped plate and the second arc-shaped plate, and the third arc-shaped plate is slidably connected to the first arc-shaped plate and the second arc-shaped plate.

2. The hydraulic support according to claim 1, characterized in that, The first arc-shaped plate includes a sliding connection portion; The third arc-shaped plate includes a slider, which is slidably connected to the sliding connection portion.

3. The hydraulic support according to claim 2, characterized in that, The sliding connection includes a first opening facing the second arc-shaped plate.

4. The hydraulic support according to claim 2, characterized in that, The sliding connection part further includes: a first limiting block, disposed at one end of the sliding connection part; One end of the sliding member has a protrusion that cooperates with the first limiting block. When the side guard plate is in the first position, the first limiting block can limit the protrusion.

5. The hydraulic support according to any one of claims 1 to 4, characterized in that, Also includes: At least one pin; The third arc-shaped plate also includes at least one pin hole through which the pin can pass; The second arc-shaped plate also includes at least one second opening through which the pin passes and slides.

6. The hydraulic support according to claim 5, characterized in that, The number of pins is two.

7. The hydraulic support according to claim 5, characterized in that, Also includes: A cotter pin is provided on the pin shaft to fix the second arc-shaped plate and the third arc-shaped plate.

8. The hydraulic support according to claim 6, characterized in that, The first arc-shaped plate also includes a recessed portion, which is provided corresponding to the pin shaft; The pin includes a pin head, which is disposed within the recess when the side guard plate is in the second position.

9. The hydraulic support according to any one of claims 1 to 4, characterized in that, The thickness of the second arc-shaped plate is greater than or equal to 5 mm and less than or equal to 15 mm.

10. The hydraulic support according to any one of claims 1 to 4, characterized in that, Also includes: A hydraulic cylinder, one end of which is connected to the top beam and the other end of which is connected to the side guard plate.

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