阅读说明：本技术 单立柱轻型液压支架 (Single-column light hydraulic support ) 是由 李国兴 马洪乾 于 2021-08-06 设计创作，主要内容包括：本发明公开了一种单立柱轻型液压支架,本发明包括顶梁、支撑立柱和底座,所述支撑立柱设置在顶梁与底座之间,所述支撑立柱设置有一根,所述底座的外侧设置有U形的推移框架,且底座与推移框架之间设置有双推进油缸,所述推移框架的前端用于连接刮板运输机。本发明底座和顶梁之间仅设置有一根支撑立柱,普通的支撑立柱为四根或两根,其使用的支撑立柱的数量更少,底座和顶梁设置的尺寸可以更小,结构也更简单,方便井下低矮狭窄巷道条件下的运输,适用于小型煤矿的薄煤层开采工况,其制造成本也就更低。(The invention discloses a single-upright-column light hydraulic support which comprises a top beam, a support upright column and a base, wherein the support upright column is arranged between the top beam and the base, one support upright column is arranged, a U-shaped pushing frame is arranged on the outer side of the base, double propulsion oil cylinders are arranged between the base and the pushing frame, and the front end of the pushing frame is used for being connected with a scraper conveyor. According to the invention, only one support upright is arranged between the base and the top beam, four or two common support uprights are provided, the number of the used support uprights is less, the sizes of the base and the top beam can be smaller, the structure is simpler, the transportation under the condition of a low and narrow roadway under a well is convenient, the thin coal seam mining working condition of a small coal mine is suitable, and the manufacturing cost is lower.)

1. The utility model provides a light-duty hydraulic support of single column, includes front-axle beam, back timber, screen roof beam, support post, front and back connecting rod and base, the support post sets up between back timber and base, its characterized in that: the support column is provided with one, the outside of base is provided with U-shaped and passes the frame, and is provided with thrust cylinder between base and the frame of passing, the front end of passing the frame is used for connecting the scraper conveyor.

2. The single-column light hydraulic support of claim 1, wherein: the side protection plates are symmetrically arranged on two sides of the top beam and the front beam, the cross sections of the side protection plates are L-shaped, guide sleeves are arranged inside the top beam and the front beam, side protection oil cylinders are arranged in the guide sleeves, the side protection oil cylinders are installed inside corresponding beam bodies, piston rods of the side protection oil cylinders slide through the guide sleeves, one sides of the side protection plates are lapped on the upper ends of the corresponding beam bodies, and the other sides of the side protection plates are hinged to the end portions of cylinder barrels of the oil cylinders and can stretch along with the side protection oil cylinders.

3. The single-column light hydraulic support of claim 1, wherein: the improved bottom lifting device is characterized in that bottom lifting oil cylinders are arranged between the two sides of the base and the pushing frame and are arranged on the base through mounting frames, each mounting frame comprises a top frame and a guide sleeve, the top frames are vertically arranged on the base, the upper ends of the top frames are provided with lug plates connected and used for connecting the bottom lifting oil cylinders, the guide sleeves are vertically fixed in the top frames and located on the lower sides of the lug plates, cylinder bases of the bottom lifting oil cylinders are connected to the lug plates through pin shafts, and the cylinder barrels of the bottom lifting oil cylinders slide through the guide sleeves.

4. The single-column light hydraulic support of claim 5, wherein: the two groups of the propulsion oil cylinders are arranged on two sides of the base respectively, the rear end of the pushing frame and the guide sleeve are provided with connecting seats used for connecting the propulsion oil cylinders respectively, at least one front beam oil cylinder is arranged between the front beam and the top beam, and a balance oil cylinder is arranged between the top beam and the shield beam.

5. The single-column light hydraulic support of claim 1, wherein: and anti-skid oil cylinders are further arranged on two sides of the base and are used for connecting the bases of two adjacent hydraulic supports and can also be connected to chutes of adjacent scraper conveyors.

6. The single-column light hydraulic support of claim 1, wherein: the bottom of the U-shaped inner side of the pushing frame is a chamfer plane.

Technical Field

The invention relates to the technical field of coal mining equipment, in particular to a single-upright-column light hydraulic support.

Background

The hydraulic support is a structure for controlling the mine pressure of the coal face, can reliably and effectively support and control a top plate of the face, isolates a goaf, prevents gangue from entering a stope face and a pushing conveyor, and guarantees the life safety of coal miners to the maximum extent by guaranteeing the stability of surrounding rocks on the face.

In some small coal mines, especially in the mining of thin coal seams, the support of the working face is divided into a single hydraulic prop, a suspension support and a hydraulic support. The single prop is simple in structure and lower in cost, but is inconvenient to use by workers during use, high in labor intensity, the suspension support is inferior to a hydraulic support in use stability and supporting strength, but the use cost of the hydraulic support is too high, and the small coal mine generally abandons the use of the hydraulic support due to overhigh expenditure cost.

Disclosure of Invention

The invention aims to overcome the defects, and provides a single-upright-column light hydraulic support which is used for mining a thin coal seam of a small coal mine, so that the labor intensity of mining personnel is reduced, and the cost of hydraulic support can be reduced.

The technical scheme adopted by the invention is as follows:

the utility model provides a light-duty hydraulic support of single-column, includes front-axle beam, back timber, screen roof beam, support post, front and back connecting rod and base, the support post sets up between back timber and base, the support post is provided with one, the outside of base is provided with the U-shaped and advances the frame, and is provided with thrust cylinder between base and the frame of advancing, the front end of advancing the frame is used for connecting the scraper conveyor.

As a further optimization, symmetrical side protection plates are arranged on two sides of the top beam and the front beam, the cross sections of the side protection plates are L-shaped, guide sleeves are arranged inside the top beam and the front beam, side protection oil cylinders are arranged in the guide sleeves, the side protection oil cylinders are arranged inside corresponding beam bodies, piston rods of the side protection oil cylinders slide through the guide sleeves, one sides of the side protection plates are in lap joint with the upper ends of the corresponding beam bodies, and the other sides of the side protection plates are hinged to the end portions of the cylinder barrels of the oil cylinders and can stretch along with the side protection oil cylinders.

As a further optimization, bottom lifting oil cylinders are arranged between two sides of the base and the pushing frame, the bottom lifting oil cylinders are arranged on the base through mounting frames, each mounting frame comprises a top frame and a guide sleeve, the top frames are vertically arranged on the base, ear plates connected with the top frames and used for being connected with the bottom lifting oil cylinders are arranged at the upper ends of the top frames, the guide sleeves are vertically fixed in the top frames and located on the lower sides of the ear plates, cylinder seats of the bottom lifting oil cylinders are connected to the ear plates through pin shafts, and cylinder barrels of the bottom lifting oil cylinders penetrate through the guide sleeves in a sliding mode.

As a further optimization, the two groups of propulsion oil cylinders are arranged, the two groups of propulsion oil cylinders are respectively arranged on two sides of the base, the rear end of the pushing frame and the guide sleeve are respectively provided with a connecting seat for connecting the propulsion oil cylinders, at least one front beam oil cylinder is arranged between the front beam and the top beam, and a balance oil cylinder is arranged between the top beam and the shield beam.

As a further optimization, anti-skid oil cylinders are further arranged on two sides of the base, and the anti-skid oil cylinders are used for connecting the bases of two adjacent hydraulic supports and can also be connected to chutes of adjacent scraper conveyors.

As a further optimization, the bottom of the U-shaped inner side of the pushing frame is a chamfer plane, and the front end of the base is provided with a turned edge, so that the pushing and the moving of the base are facilitated.

The invention has the following advantages:

1. according to the invention, only one support upright is arranged between the base and the top beam, four or two common support uprights are provided, the number of the used support uprights is less, the sizes of the base and the top beam can be smaller, the structure is simpler, the device is suitable for the thin coal seam mining working condition of a small coal mine, the transportation under the condition of a narrow low roadway is convenient, and the manufacturing cost is lower;

2. the pushing frame is arranged on the outer side of the base, and compared with a mode of pushing a tongue at the middle part, the pushing oil cylinder is arranged between the base and the two sides of the pushing frame, so that the base and the pushing frame are simpler in structure and convenient to process, and the manufacturing cost is further reduced;

3. the base is provided with the bottom lifting oil cylinder, so that the front end of the base can be lifted by the bottom lifting oil cylinder when the supporting surface is soft and the base sinks, and the frame can be conveniently moved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a perspective view of the overall structure of the present invention;

FIG. 2 is a perspective view of another perspective of the overall structure of the present invention;

fig. 3 is a schematic perspective view of the base of the present invention.

Wherein: 1. the device comprises a front beam, 2, a top beam, 3, a shield beam, 4, a front connecting rod, 5, a rear connecting rod, 6, a base 7, a propulsion oil cylinder, 8, a pushing frame, 9, a front beam oil cylinder, 10, a supporting upright post, 11, a balance oil cylinder, 12, a bottom lifting oil cylinder, 13, an anti-skidding oil cylinder, 14, a side protection oil cylinder, 15, a top beam side protection plate, 16, a front beam side protection plate 17, a side protection oil cylinder guide sleeve, 18 and a bottom lifting oil cylinder guide sleeve.

Detailed Description

The present invention is further described in the following with reference to the drawings and the specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention, and the embodiments and the technical features of the embodiments can be combined with each other without conflict.

It is to be understood that the terms first, second, and the like in the description of the embodiments of the invention are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order. The "plurality" in the embodiment of the present invention means two or more.

The term "and/or" in the embodiment of the present invention is only an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, B exists alone, and A and B exist at the same time. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

A single-upright light hydraulic support is shown in figures 1 and 2 and comprises a top beam 1, a front beam 2, a support upright 10 and a base 6, wherein the support upright is arranged between the top beam 1 and the base 6, the support upright 10 is provided with one hydraulic cylinder, the support upright 10 is obliquely arranged, the connecting end of the support upright 10 and the top beam 1 is closer to a coal mining working face relative to the connecting end with the base 6, namely the upper end of the support upright 10 is more towards the working face relative to the lower end. The outer side of the base 6 is provided with a U-shaped pushing frame 8, a propulsion oil cylinder 7 is arranged between the base 6 and the pushing frame 8, and the front end of the pushing frame 8 is used for being connected with a scraper conveyor.

This embodiment the rear end of back timber 2 is connected with and shields roof beam 3, shield roof beam 3 mainly used protects falling rocks in collecting space area and sinks etc., it is articulated between shield roof beam 3 and the back timber 2, and is provided with balance cylinder 11 between back timber 2 and the shield roof beam 3, and the cylinder block of balance cylinder 11 and the tip of balance cylinder 11's piston rod articulate respectively on back timber 2 and shield roof beam 3, balance cylinder 11 can be used for adjusting the tendency of back timber 2. A hinged connecting rod is arranged between the shield beam 3 and the base 6 and comprises a front hinged connecting rod 4 and a rear hinged connecting rod 5, two ends of the front hinged connecting rod 4 are respectively hinged to the middle of the shield beam 3 and the middle of the base 6, two ends of the rear hinged connecting rod 5 are respectively hinged to the end of the shield beam 3 and the end of the base 6, as shown in fig. 1 and 2, the front hinged connecting rod 4 is a Y-shaped integral rod body, the rear hinged connecting rod comprises two split rods, and the two split rods are respectively hinged to two sides of the shield beam 3.

This embodiment the front end of back timber 2 is provided with front-end beam 1, and the rear end of front beam 1 articulates the front end at back timber 2, and is provided with front beam hydro-cylinder 9 between back timber 2 and the front beam 1, as further optimization, front beam hydro-cylinder 9 is provided with two, and the cylinder base of front beam hydro-cylinder 9 and the tip of piston rod articulate respectively on back timber 2 and front beam 1, front beam 1 is used for the extension to cover the scope, forms the operation passageway below.

In this embodiment, bottom-lifting oil cylinders 12 are arranged between both sides of a base 6 and a pushing frame 8, the base is structured as shown in fig. 3, the bottom-lifting oil cylinders 12 are arranged on the base 6 through mounting frames, each mounting frame comprises a top frame and a bottom-lifting oil cylinder guide sleeve 18, the top frames are vertically arranged on the base 6, the upper ends of the top frames are provided with lug plates connected with the bottom-lifting oil cylinders 12, the bottom-lifting oil cylinder guide sleeves 18 are vertically fixed in the top frames and located on the lower sides of the lug plates, cylinder seats of the bottom-lifting oil cylinders 12 are connected to the lug plates through pin shafts, and the bottoms of the bottom-lifting oil cylinders 12 slide through the bottom-lifting oil cylinder guide sleeves 18. The two groups of the propulsion oil cylinders 7 are also arranged, the two groups of the propulsion oil cylinders 7 are respectively arranged at two sides of the base 6, the rear end of the pushing frame 8 and the bottom lifting oil cylinder guide sleeve 18 are respectively provided with a connecting seat for connecting the propulsion oil cylinders 7. When the base 6 of the hydraulic support sinks due to the fact that the supporting surface is soft, the base 6 needs to be lifted when the support is moved, pressure is supplied to the bottom lifting oil cylinder 12, the bottom lifting oil cylinder 12 is supported on the pushing frame 8 after extending, and in the process of continuing extending, the base 6 is supported, and the front end of the base 6 is lifted.

In this embodiment, a top beam side guard plate 15 and a front beam side guard plate 16 are respectively arranged on two sides of the top beam 2 and the front beam 1, the top beam side guard plate 15 and the front beam side guard plate 16 are all L-shaped in cross section, side guard cylinder guide sleeves 17 are respectively arranged inside the top beam 2 and the front beam 1, one side of the top beam side guard plate 15 is lapped on the upper end surface of the top beam 2, one side of the front beam side guard plate 16 is lapped on the upper end surface of the front beam, the other side of the front beam side guard plate is hinged on piston rods of side guard cylinders 14 in the corresponding beam body guide sleeves 17, the extension and retraction are completed under the driving of the side guard cylinders 14, the top beam side guard plate 15 and the front beam side guard plate 16 are arranged to expand the shield width, the arrangement widths of the front beam 1 and the top beam 2 are reduced, the overall manufacturing cost is reduced, adjacent hydraulic supports are sequentially arranged, the top beam side guard plate 15 and the front beam side guard plate 16 between adjacent hydraulic supports are sequentially butted, and the side protection oil cylinder 14 is used for supporting, and the protection of the top beam side protection plate 15 and the front beam side protection plate 16 also has good stability.

In this embodiment, anti-skid oil cylinders 13 are further disposed on two sides of the base 6, as shown in fig. 3, connecting seats for connecting the anti-skid oil cylinders 13 are disposed on two sides of the base 6, and the anti-skid oil cylinders 13 are used for connecting the bases 6 of two adjacent hydraulic supports. The antiskid oil cylinder 13 can be connected to the adjacent chute of the conveyor according to the requirement, and the antiskid oil cylinder is arranged in a subsection and subarea mode according to the inclination angle condition of the working surface, and is not required to be arranged completely.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.