CN-224214196-U - Jack protection structure for coal mine hydraulic support

Abstract

The utility model discloses a jack protection structure for a hydraulic support of a coal mine, which relates to the technical field of jack protection and adopts the scheme that the jack protection structure for the hydraulic support of the coal mine comprises a base, wherein a bottom adjusting beam is arranged on the side surface of the base, a hinging block is arranged on the bottom adjusting beam, a bottom adjusting jack is hinged on the base, the bottom adjusting jack is hinged with the bottom adjusting beam, a piston rod head of the bottom adjusting jack is hinged with the base, a cylinder bottom of the bottom adjusting jack is hinged with the bottom adjusting beam, a mounting block is arranged on the side surface of the base, and the mounting block is hinged with a pull back sliding jack.

Inventors

• LIU SHAOBING
• QIN JIAXIN
• HAN SHUPENG
• FANG XINHAO
• Yuan Songming
• WANG YA
• QIN GUODONG
• XU XIU
• GUO LIXIN
• NING YU
• ZHAO NA
• DONG LIANG

Assignees

• 山西潞安机械有限责任公司

Dates

Publication Date

20260508

Application Date

20230807

Claims (3)

1. 1. The jack protection structure for the coal mine hydraulic support comprises a base (1) and is characterized in that a bottom adjusting beam (6) is arranged on the side surface of the base (1), a hinge block is arranged on the bottom adjusting beam (6), a bottom adjusting jack (7) is hinged on the base (1), and the bottom adjusting jack (7) is hinged with the bottom adjusting beam (6); The piston rod head of the bottom adjusting jack (7) is hinged with the base (1), the cylinder bottom of the bottom adjusting jack (7) is hinged with the bottom adjusting beam (6), the side face of the base (1) is provided with the mounting block (2), the mounting block (2) is hinged with the pull back sliding jack (3), the pull back sliding jack (3) and the bottom adjusting beam (6) are located at one side, and the pull back sliding jack (3) is located above the bottom adjusting beam (6).
2. 2. The jack protection structure for the coal mine hydraulic support, which is disclosed in claim 1, is characterized in that one end of the pull back sliding jack (3) far away from the installation block (2) is hinged with a double-lug connection clamping ring (4), and the double-lug connection clamping ring (4) is hinged with a round-link chain (5).
3. 3. The jack protection structure for the coal mine hydraulic support is characterized in that the rear end of the round-link chain (5) is connected with a rear conveyor.

Description

Jack protection structure for coal mine hydraulic support Technical Field The utility model relates to the technical field of jack protection, in particular to a jack protection structure for a hydraulic support of a coal mine. Background The hydraulic support is a hydraulic power device which utilizes the hydraulic pressure to generate supporting force and realize automatic moving and setting to support and manage the roof, and is an indispensable corollary equipment for comprehensive mechanized coal mining. The hydraulic support is mainly used for a horizontal plane and a long-wall fully-mechanized coal mining face of the gently inclined thick coal seam with the angle less than or equal to 10 degrees, which is used for fully-high mining of the once caving coal along the bottom plate, and is also suitable for a horizontal layered caving coal fully-mechanized coal mining face of the steep inclined super-thick coal seam. Along with the continuous improvement of the fully-mechanized caving top coal process, a hydraulic support with a bottom adjusting beam with a reasonable structure is generally adopted in a coal mine, and the existing bottom adjusting beam hydraulic support has the problem of deflection in the forward moving process, so that the expansion and contraction of a back-pulling sliding jack can be influenced. Disclosure of utility model The utility model provides a jack protection structure for a coal mine hydraulic support, which aims to solve the problems in the background technology. The jack protection structure for the coal mine hydraulic support comprises a base, wherein a bottom adjusting beam is arranged on the side face of the base, a hinge block is arranged on the bottom adjusting beam, a bottom adjusting jack is hinged to the base, and the bottom adjusting jack is hinged to the bottom adjusting beam. Further, the piston rod head of the bottom adjusting jack is hinged with the base, and the cylinder bottom of the bottom adjusting jack is hinged with the bottom adjusting beam. Further, a mounting block is arranged on the side face of the base, and the mounting block is hinged to the rear sliding jack. Further, the pull back sliding jack and the bottom adjusting beam are positioned at one side, and the pull back sliding jack is positioned above the bottom adjusting beam. Further, one end of the pull back sliding jack, which is far away from the installation block, is hinged with a double-lug connecting clamping ring, and the double-lug connecting clamping ring is hinged with a round-link chain. Further, the rear end of the round-link chain is connected with a rear conveyor. Compared with the prior art, the jack protection structure for the coal mine hydraulic support has the beneficial effects that the jack protection structure for the coal mine hydraulic support has stronger deflection adjusting capability and higher safety and reliability when in use, and meanwhile, interference of a back-sliding jack pipeline of the bottom beam He La can be avoided, so that the expansion and the contraction of the back-sliding jack are ensured. Drawings FIG. 1 is a schematic diagram of the structure of the present utility model; FIG. 2 is a schematic view of the structure of the bottom jack of the present utility model; FIG. 3 is a schematic front plan view of the present utility model; Fig. 4 is a schematic side plan view of the present utility model. In the figure, 1, a base, 2, an installation block, 3, a pull back sliding jack, 4, a double-lug connecting clamping ring, 5, a round-link chain, 6, a bottom adjusting beam and 7, a bottom adjusting jack. Detailed Description The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. Referring to fig. 1-3, the utility model discloses a jack protection structure for a hydraulic support of a coal mine, which comprises a base 1, wherein a bottom adjusting beam 6 is arranged on the side surface of the base 1, a hinge block is arranged on the bottom adjusting beam 6, a bottom adjusting jack 7 is hinged on the base 1, the bottom adjusting jack 7 is hinged with the bottom adjusting beam 6, a piston rod head of the bottom adjusting jack 7 is hinged with the base 1, and a cylinder bottom of the bottom adjusting jack 7 is hinged with the bottom adjusting beam 6. The number of the bottom adjusting jacks 7 is at least two. When the bottom adjusting jack 7 stretches out, the bottom adjusting beam 6 props against the main rib outside the temporary frame base 1, so that the deflection adjusting function is realized. Specifically, a moun