A hydraulic support guard plate

Abstract

The utility model discloses a hydraulic support guard plate, which belongs to the technical field of hydraulic support related structural parts, and comprises a guard plate body, a split support assembly and an extrusion linkage unit; the guard plate body has a corresponding supporting force; a connecting ear is provided for connecting to the top beam of the hydraulic support; the split support assembly comprises a plurality of split support units, which perform corresponding support operations at different positions on the front side of the guard plate support working surface; the extrusion linkage unit is provided on the guard plate support working surface, and at the joint with the split support unit, receives the extrusion force of the split support unit and performs corresponding deformation, and can be separately supported on the coal wall, thereby reducing the support gap of the guard plate, and can exert force on the support and the coal wall to improve the support stability.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic support related structural parts, in particular to a hydraulic support guard plate. Background Art

[0002] Hydraulic supports are structures used to control the mine pressure at the coal mining face. The mine pressure at the mining face acts on the hydraulic supports in the form of external loads. Hydraulic supports are classified into shielding type, supporting type and supporting shielding type. The guard plate of the hydraulic support is a plate-like component that supports the coal wall in front of the support to prevent the coal from spalling. It is used in coal seams prone to spalling. Common types include drooping type, single-hinged upper swing type and four-link upper swing type. Use the guard jack to directly swing the guard plate, or use a connecting rod mechanism to achieve swinging.

[0003] When the guard plate is used to support the coal wall, due to the different depths of the coal wall, the guard plate is an integral fixed structure and cannot fit well with the coal wall. There are many gaps, which affects the support effect of the coal wall. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a hydraulic support guard plate, which can be separated and supported on the coal wall respectively, reducing the support gap of the guard plate, and can exert force on the support and the coal wall to improve the support stability.

[0005] The technical solution adopted by the utility model is as follows: a hydraulic support guard plate, including a guard plate body, a split support assembly and an extrusion linkage unit; the guard plate body has a corresponding supporting force; a connecting ear is provided for connecting to the top beam of the hydraulic support; the split support assembly includes a plurality of split support units, which perform corresponding support operations at different positions on the front side of the guard plate support working surface; the extrusion linkage unit is provided on the guard plate support working surface, at the connection with the split support unit, to receive the extrusion force of the split support unit and perform corresponding deformation.

[0006] Furthermore, the upper and lower ends of the front side of the guard plate supporting the working surface are respectively connected to the limiting side plates opposite to the guard plate supporting working surface, and limiting columns are installed between the limiting side plates and the guard plate working surface. The upper and lower ends of the split support unit are respectively movably penetrated by the limiting columns, and can be displaced along the length direction of the limiting columns when subjected to force to perform corresponding support operations.

[0007] Furthermore, the extrusion linkage unit includes a main airbag body and a sub-airbag body connected to the main airbag body, the main airbag body is installed at the center of the supporting working surface of the guard plate, and the sub-airbag body is installed at the four corners of the supporting working surface of the guard plate.

[0008] Furthermore, the split support unit includes a support plate, the support plate has a certain elastic deformation ability, and the support working surface of the support plate is equipped with a crushing rack.

[0009] Furthermore, the shells of the main airbag body and the sub-airbag body are both rubber shells with a certain elasticity, and are filled with elastic fillers with a certain elasticity.

[0010] After adopting the above structure, the beneficial effects of the utility model are as follows: the utility model proposes a hydraulic support guard plate, which can support the coal wall respectively through the split support units running at intervals, and move in the direction close to and away from the coal wall, adapting to the support of uneven coal walls, reducing the support gaps, and improving the support effect; through the set extrusion linkage unit, when the split support unit performs support operations, the coal wall applies a reverse working force, which can be transmitted to the main airbag body or sub-airbag body of the extrusion linkage unit through the split support units at different positions, so that the main airbag body or sub-airbag body is deformed in a linked manner, squeezing the corresponding split support unit to move toward the coal wall and hold the coal wall, reducing the support gaps and improving the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0012] Figure 1 This is a schematic diagram of the overall structure of a hydraulic support guard plate proposed by the utility model;

[0013] Figure 2 A half-section view of a hydraulic support guard plate proposed by the utility model;

[0014] Figure 3 The utility model is a schematic diagram of the structure of an extrusion linkage unit of a hydraulic support guard plate.

[0015] In the attached drawings: 1. guard plate body, 2. connecting ears, 3. limiting side plates, 4. limiting columns, 5. main airbag body, 6. sub-airbag body, 7. supporting plate, 8. crushing rack, 9. connecting pipe. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0018] like Figure 1-Figure 3 As shown, a hydraulic support guard plate comprises three parts: a guard plate body 1, a split support assembly and an extrusion linkage unit; the guard plate body 1 has a corresponding supporting force, and the guard plate is provided with a connecting ear 2 for connecting to the top beam of the hydraulic support; the split support assembly is pushed toward the top wall along with the guard plate body 1 for supporting, and the split support assembly comprises a plurality of split support units, which perform corresponding supporting operations at different positions on the front side of the guard plate support working surface to reduce the support gap, and the extrusion linkage unit is provided on the guard plate support working surface, at the joint with the split support unit, to bear the extrusion force of the split support unit and perform corresponding deformation, so that the split support assembly is pressed against the coal wall, thereby improving the support effect;

[0019] In some preferred embodiments, the extrusion linkage unit includes a main airbag body 5 and a sub-airbag body 6 connected to the main airbag body 5. The main airbag body 5 is installed at the center of the support working surface of the guard plate, and the sub-airbag body 6 is installed at the four corners of the support working surface of the guard plate. The sub-airbag bodies are respectively connected to the main airbag through connecting pipes 9. If the main airbag position is squeezed first, the air flow in the main airbag flows to the sub-airbag, and the sub-airbag squeezes the support plate 7 of the corresponding split support unit toward the coal wall, so that the support plate 7 moves to support the coal wall and reduces the support gap. In this embodiment, it is preferred that the shells of the main airbag body 5 and the sub-airbag body 6 are rubber shells with a certain elasticity, and are filled with elastic fillers with a certain elasticity inside. The main airbag and the sub-airbag body 6 have a certain deformation ability.

[0020] In some preferred embodiments, the upper and lower ends of the front side of the guard plate supporting the working surface are respectively connected to the limiting side plates 3 opposite to the guard plate supporting working surface, and the limiting columns 4 are installed between the limiting side plates 3 and the guard plate working surface. The upper and lower ends of the split support unit are respectively movably penetrated by the limiting columns 4, and can be displaced along the length direction of the limiting columns 4 when subjected to force to perform corresponding support operations. In this embodiment, the split support unit includes a support plate 7, which has a certain elastic deformation ability. In addition, the support working surface of the support plate 7 is equipped with a crushing rack 8; the limiting column 4 is set to a predetermined length to limit the maximum displacement distance of the support plate 7. If the support plate 7 at the position of the sub-airbag 6 first contacts the coal wall and supports the coal wall, the sub-airbag is subjected to the reverse force of the coal wall, and the internal airflow is squeezed through the connecting pipe 9 into the main airbag 5. The main airbag 5 expands and squeezes the corresponding support plate 7 toward the coal wall, so that the support plate 7 moves toward the coal wall and supports the corresponding position of the coal wall, thereby reducing the support gap of the guard plate and ensuring the support effect.

[0021] Based on the above embodiments, the working principle of the present application is as follows: when the guard plate is performing a supporting operation on the coal wall, the guard plate body 1 approaches the coal wall. Due to the uneven surface of the coal wall, the one or more split support units on the front side of the guard plate body 1 first contact and hold the coal wall, and transmit the reverse force of the coal wall to the corresponding sub-air bag 6 or the main air bag 5. The sub-air bag 6 or the main air bag 5 is squeezed, and the internal air flow moves through the connecting pipe 9, causing the sub-air bag and the main air bag to perform corresponding linkage deformation. The bulging sub-air bag 6 or the main air bag 5 pushes the corresponding support plate 7 toward the coal wall, so that the support plate 7 holds the coal wall, reducing the support gap and ensuring the support effect of the guard plate on the coal wall.

[0022] Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the scope of protection of the utility model.

Claims

1. A hydraulic support guard plate, characterized in that: include: The main body of the guard plate has corresponding supporting force; A connecting ear is provided for connecting to the top beam of the hydraulic support; The split support assembly includes a plurality of split support units, which perform corresponding support operations at different positions on the front side of the support working surface of the guard plate; The extrusion linkage unit is arranged on the supporting working surface of the side guard plate and connected with the split supporting unit, and receives the extrusion force of the split supporting unit and undergoes corresponding deformation; The extrusion linkage unit includes a main airbag body and a sub-airbag body connected to the main airbag body. The main airbag body is installed at the center of the supporting working surface of the guard plate, and the sub-airbag body is installed at the four corners of the supporting working surface of the guard plate.

2. The hydraulic support guard plate according to claim 1 is characterized in that: The upper and lower ends of the front side of the guard plate supporting the working surface are respectively connected to the limiting side plates opposite to the guard plate supporting working surface, and limiting columns are installed between the limiting side plates and the guard plate working surface. The upper and lower ends of the split support unit are respectively movably penetrated by the limiting columns, and can be displaced along the length direction of the limiting columns when subjected to force to perform corresponding support operations.

3. The hydraulic support guard plate according to claim 1 is characterized in that: The split support unit includes a support plate, which has a certain elastic deformation ability, and the support working surface of the support plate is equipped with a crushing rack.

4. The hydraulic support guard plate according to claim 1 is characterized in that: The shells of the main airbag body and the sub-airbag body are both rubber shells with a certain elasticity, and are filled with elastic fillers with a certain elasticity.

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