Telescopic and detachable multifunctional waste rock blocking net with large mining height support

Abstract

The utility model discloses a telescopic and detachable multifunctional waste rock blocking net for a large-mining-height support, and belongs to the technical field of large-mining-height support protection. Comprising a fixed protective net arranged between two hydraulic support stand columns and a fixed sleeve connected to the outer walls of the hydraulic support stand columns in a matched mode. The inner wall of the fixing sleeve and the outer wall of the hydraulic support stand column are connected in a tight fit mode. A plurality of sets of double-lug connectors are symmetrically arranged on the two sides of the fixed protective net, and the double-lug connectors on the two sides of the fixed protective net are connected with the fixing sleeve through hinge pieces and fixing pieces respectively. The fixed protective net is of an inner-outer double-layer protective structure with an opening in the upper end, and a sliding protective net is connected into the fixed protective net in an up-down sliding mode. The fixed protective net is arranged to be the telescopic and detachable protective net, the purposes of preventing gangue from splashing into a working face and facilitating passing of a pedestrian passage can be achieved, meanwhile, the height of the protective net can be adjusted along with the hydraulic support, and normal work of the hydraulic support is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of large mining height support protection, and in particular relates to a telescopic and detachable multifunctional rock blocking net for a large mining height support. Background Art

[0002] At present, mechanized comprehensive mining is widely used underground. In the process of coal mining, the coal blocks and gangue cut by the coal mining machine often fly into the workers' work space. The flying coal blocks, gangue, etc. are very likely to injure workers and damage the comprehensive mining equipment, causing extremely serious personal and equipment safety accidents. The new national standard also has clear requirements for pedestrian passage safety and support to prevent gangue leakage. Therefore, the installation of protective devices between the coal mining machine and the workers' work space has also received attention from many hydraulic support manufacturers.

[0003] Existing protective devices are mostly rigid rock-blocking plate structures or use waste conveyor belts to play a protective role. These structures are bulky and easily affect the operation of the hydraulic support. They also have poor protective effects, blocking the connection between the pedestrian passages in front and behind the support, and obstructing the view from the rear pedestrian passage to the mining face, which is not conducive to equipment operation and personnel passage.

[0004] Therefore, it is urgent to design a new type of rock retaining plate structure that can simultaneously meet the working requirements of hydraulic support and facilitate pedestrian passage. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a retractable and detachable multifunctional gangue-blocking net for a large mining height support. Through the coordinated arrangement of the fixed protective net and the fixed sleeve, the fixed protective net can be rotated on one side and fixed on the other side with a detachable function, thereby achieving the purpose of preventing gangue from splashing into the working surface and facilitating the passage of pedestrians. At the same time, a retractable sliding protective net is also arranged in the fixed protective net, so that it can achieve the function of adjusting the height with the hydraulic support, thereby ensuring the normal operation of the hydraulic support.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a retractable and detachable multifunctional rock-blocking net for a large mining height support, comprising a fixed protective net arranged between two hydraulic support columns, and a fixed sleeve cooperatively connected to the outer wall of the hydraulic support column; the inner wall of the fixed sleeve is tightly fitted to the outer wall of the hydraulic support column; multiple groups of double-ear connectors are symmetrically arranged on both sides of the fixed protective net, the double-ear connector on one side of the fixed protective net is rotatably connected to the fixed sleeve through a hinge, and the double-ear connector on the other side of the fixed protective net is fixedly connected to the fixed sleeve through a fixing piece; the fixed protective net is arranged as an inner and outer double-layer protective structure with an open upper end, and a sliding protective net is slidably connected to its interior up and down.

[0007] Limiting holes are arranged on both sides of the end surface of the sliding protection net, and limiting bolts corresponding to the positions of the limiting holes are arranged through the fixed protection net. The sliding protection net is limited in the fixed protection net through the corresponding connection between the limiting bolts and the limiting holes.

[0008] The fixing sleeve is composed of two fixing half rings fixedly connected together by fixing bolts in the middle, and is tightly fitted on the outer wall of the hydraulic support column by the fixing bolts.

[0009] A single-ear connector is also provided on the outer wall of one of the fixed semi-rings, and the single-ear connector is correspondingly arranged in the two ears of the two-ear connector, and the fixed sleeve is connected to the two-ear connector of the fixed protective net through the single-ear connector.

[0010] The hinged part is rotatably connected by a hinge bolt, and the fixed part is fixedly connected by a fixed pin shaft.

[0011] The double-ear connectors are provided in two groups and are respectively fixed to the upper and lower sides of the middle part of the protective net.

[0012] The beneficial effects of the utility model are:

[0013] 1) The utility model device, through the coordinated arrangement of the fixed protection net and the fixed sleeve, enables the fixed protection net to rotate on one side and be fixed on the other side, and has the functions of rotation and disassembly, so as to achieve the purpose of preventing gangue from splashing into the working surface and facilitating the passage of pedestrians, and can improve the working efficiency while providing protection.

[0014] 2) A retractable sliding protection net is also provided inside the fixed protection net of the utility model device, so that the fixed protection net can achieve the function of adjusting the height along with the hydraulic support, and can not hinder the lifting and lowering of the hydraulic support, thereby ensuring the normal operation of the hydraulic support. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Structural schematic diagram of the middle fixed sleeve and the fixed protective net;

[0017] Figure 3 It is a structural schematic diagram of the utility model when the fixed protective net is in an open state.

[0018] In the figure, 1-fixing sleeve, 101-fixing half ring, 102-fixing bolt, 103-single ear connector, 2-fixing protection net, 3-sliding protection net, 4-hydraulic support column, 5-fixing part, 6-limiting bolt, 7-hinge, 8-double ear connector, 9-limiting hole. DETAILED DESCRIPTION

[0019] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0020] Example: Figure 1 and Figure 2 As shown, the utility model provides a retractable and detachable multifunctional rock retaining net for a large mining height support, comprising a fixed protective net 2 installed between two hydraulic support columns 4, and a fixed sleeve 1 cooperatively connected to the outer wall of the hydraulic support column 4; wherein the inner wall of the fixed sleeve 1 is tightly fitted to the outer wall of the hydraulic support column 4.

[0021] Two groups of double-ear connectors 8 are symmetrically connected on both sides of the fixed protective net 2, and the two groups of double-ear connectors 8 respectively fix the upper and lower sides of the middle part of the protective net 2; the double-ear connector 8 on one side of the fixed protective net 2 is rotatably connected to the fixed sleeve 1 through a hinge 7, and the hinge 7 is rotatably connected using a hinge bolt; the double-ear connector 8 on the other side of the fixed protective net 2 is fixedly connected to the fixed sleeve 1 through a fixing member 5, and the fixing member 5 is fixedly connected using a fixed pin shaft.

[0022] The fixed protective net 2 is configured as an inner and outer double-layer protective structure with an opening at the upper end, and a sliding protective net 3 is slidably connected to the inside thereof up and down; limiting holes 9 are provided on both sides of the end face of the sliding protective net 3, and limiting bolts 6 corresponding to the positions of the limiting holes 9 are installed through the fixed protective net 2. The sliding protective net 3 can be limited in the fixed protective net 2 by being connected and fixed in the limiting holes 9 with the limiting bolts 6.

[0023] The fixing sleeve 1 is composed of two fixing half rings 101 fixedly connected together by fixing bolts 102 in the middle, and is tightly fitted on the outer wall of the hydraulic support column 4 through the fixing bolts 102; a single-ear connector 103 is also welded on the outer wall of one of the fixing half rings 101, and the single-ear connector 103 is correspondingly installed in the two ears of the two-ear connector 8, and is connected through the hinge 7 or the fixing piece 5, and the fixing sleeve 1 is connected to the two-ear connector 8 of the fixed protective net 2 through the single-ear connector 103.

[0024] During normal use, the position between the two hydraulic support columns 4 can be protected by a fixed protective net 2, thereby completely shielding the pedestrian passage behind the hydraulic support columns 4 behind the columns and the protective net to prevent debris such as gangue from splashing into the rear pedestrian passage.

[0025] like Figure 2 As shown, when the hydraulic support column 4 is raised, the limiting bolts 6 on the fixed protection net 2 are taken out, and the sliding protection net 3 can be pulled out to a certain height, and then fixed with the limiting bolts 6 to increase the protection height.

[0026] like Figure 3As shown, when personnel need to enter the pedestrian passage on the other side of the hydraulic support column 4 from the pedestrian passage on one side, the fixed pin 5 is pulled out, and the fixed protective net 2 can be rotated along the hinge bolt 7 to open the passage so that the personnel can cross the column and enter the passage on the other side.

[0027] The utility model adopts the matching arrangement of the fixed protection net and the fixed sleeve so that the fixed protection net can rotate on one side and be fixed on the other side, and has the functions of rotation and disassembly, so as to achieve the purpose of preventing gangue from splashing into the working surface and facilitating the passage of pedestrians, and can improve the working efficiency while providing protection.

[0028] A retractable sliding protective net is also provided inside the fixed protective net, so that the fixed protective net can adjust the height along with the hydraulic support, and can not hinder the lifting and lowering of the hydraulic support, thereby ensuring the normal operation of the hydraulic support.

[0029] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A multifunctional slag retaining net with a large mining height support that can be retracted and disassembled, characterized in that: The invention comprises a fixed protective net (2) arranged between two hydraulic support columns (4), and a fixed sleeve (1) connected to the outer wall of the hydraulic support column (4); the inner wall of the fixed sleeve (1) is tightly fitted to the outer wall of the hydraulic support column (4); a plurality of groups of double-ear connectors (8) are symmetrically arranged on both sides of the fixed protective net (2); the double-ear connectors (8) on one side of the fixed protective net (2) are rotatably connected to the fixed sleeve (1) through a hinge (7), and the double-ear connectors (8) on the other side of the fixed protective net (2) are fixedly connected to the fixed sleeve (1) through a fixing member (5); the fixed protective net (2) is arranged as an inner and outer double-layer protective structure with an open upper end, and a sliding protective net (3) is slidably connected to the inner side of the fixed protective net (2) in an upward and downward manner.

2. According to claim 1, a retractable and detachable multifunctional rock-blocking net for a large mining height support, characterized in that: Limiting holes (9) are provided on both sides of the end surface of the sliding protection net (3), and limiting bolts (6) corresponding to the positions of the limiting holes (9) are provided through the fixed protection net (2), and the sliding protection net (3) is limited in the fixed protection net (2) through the corresponding connection between the limiting bolts (6) and the limiting holes (9).

3. The multifunctional slag retaining net with a retractable and detachable large mining height support according to claim 1 is characterized by: The fixing sleeve (1) is composed of two fixing half rings (101) fixedly connected together in the middle by fixing bolts (102), and is tightly fitted on the outer wall of the hydraulic support column (4) through the fixing bolts (102).

4. The multifunctional slag retaining net with a retractable and detachable large mining height support according to claim 3 is characterized by: A single-ear connector (103) is also provided on the outer wall of one of the fixed half rings (101), and the single-ear connector (103) is correspondingly arranged in the two ears of the double-ear connector (8), and the fixed sleeve (1) is connected to the double-ear connector (8) of the fixed protection net (2) via the single-ear connector (103).

5. The retractable and detachable multifunctional rock-blocking net for large mining height support according to claim 1 is characterized in that: The hinged member (7) is rotatably connected by a hinge bolt, and the fixed member (5) is fixedly connected by a fixed pin shaft.

6. The retractable and detachable multifunctional rock-blocking net for large mining height support according to claim 1 is characterized in that: The double-ear connectors (8) are provided in two groups and are respectively fixed to the upper and lower sides of the middle of the protective net (2).

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