Detachable end bracket waste rock blocking device

Abstract

The utility model belongs to the field of hydraulic supports, and particularly relates to a waste rock blocking device with a detachable end support. The upper end of the waste rock blocking device is hinged to a shield beam of the end hydraulic support through a pin shaft. The waste rock blocking device is kept vertical when no external force exists, the waste rock blocking device can swing towards the end hydraulic support under the external force, and a swing limiting structure is arranged between the waste rock blocking device and the shield beam; the gangue blocking device is divided into independent left and right parts; each part comprises an upper baffle and a lower baffle, and the upper baffle and the lower baffle are combined through a bolt; according to the position of a hole in the rear portion of the shield beam and the normal working height of the support, the gangue blocking device is innovatively designed, the requirement that when gangue collapses on the rear portion of the baffle, the baffle swings towards the side of the base by 15 degrees to the maximum degree can be met, the gangue can be prevented from rushing into the working face, underground safety can be greatly improved, and the labor cost of gangue cleaning can be greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic supports, specifically relating to a detachable end support rock-blocking device. Background Technology

[0002] The ZT19200 / 25 / 50D type end hydraulic support can be applied to working faces with a total coal seam thickness of approximately 5.4-7.3m, averaging 6.3m, and a net coal seam thickness of 4.7-7.0m, averaging 5.9m. The coal seam structure is complex, typically containing 3-6 layers of gangue, primarily carbonaceous mudstone and sandy mudstone. The end hydraulic support adopts a "two-support-per-group, separate-stepping" structure, with the transfer machine centrally located. The total length of the support is 15.3 meters. The front part uses upper and lower connecting rods to connect the front top beam and the base, while the rear part uses a standard four-bar linkage mechanism. During normal operation, there is a certain amount of exposed space at the rear of the end hydraulic support, making it easy for gangue to collapse and accumulate at the rear of the support, which is very difficult to clean and prone to danger. Furthermore, installing structural components underground is time-consuming and labor-intensive. Therefore, a detachable gangue-blocking device is needed. Utility Model Content

[0003] This invention addresses the problem that the rear of the hydraulic support at the end has a certain amount of exposed space, making it easy for rockfall to flow into the working face and accumulate at the rear of the support.

[0004] This utility model provides the following technical solution: a detachable end support rock-blocking device, wherein the upper end of the rock-blocking device is hinged to the shield beam of the end hydraulic support by a pin; the rock-blocking device remains vertical when there is no external force, and can swing towards the end hydraulic support under the action of external force, and a swing limiting structure is provided between the rock-blocking device and the shield beam; the rock-blocking device is divided into two independent left and right parts; each part includes an upper baffle and a lower baffle, which are connected by bolts.

[0005] Furthermore, the lower baffle is provided with an upwardly extending connecting plate, the upper end of the lower baffle is connected to the lower end of the upper baffle, the connecting plate covers the upper baffle, and the connecting plate and the upper baffle are connected by bolts.

[0006] Furthermore, the upper baffle includes an upper support plate. The side of the upper support plate facing the end hydraulic support has upper transverse stiffeners and upper vertical stiffeners. Two of the upper vertical stiffeners extend upwards, and pin holes are opened at the extended ends of the two upper vertical stiffeners. The two upper vertical stiffeners extend into the space between the two vertical ribs of the shield beam. Pins are inserted into the pin holes of the upper vertical stiffeners and the pin holes of the vertical ribs for connection.

[0007] Furthermore, the lower baffle includes a lower support plate, and the side of the lower support plate facing the end hydraulic support has lower transverse stiffeners and lower vertical stiffeners, with the lower vertical stiffeners aligned with the upper vertical stiffeners of the upper baffle.

[0008] Furthermore, the swing limit structure restricts the maximum swing angle of the rock-blocking device to 15°.

[0009] Furthermore, the upper transverse stiffener of the upper baffle is stopped by the vertical rib of the protective beam to form a swing limit.

[0010] Furthermore, the upper vertical stiffeners gradually decrease in height from top to bottom, and the entire length of the lower vertical stiffeners is flush with the short end of the upper vertical stiffeners.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] This utility model provides a detachable end support rock-blocking device, mainly composed of upper baffle, lower baffle, bolts and other components. Based on the position of the hole at the rear of the shield beam and the normal working height of the support, the rock-blocking device is innovatively designed. It can swing up to the base side by a maximum of 15° when rock collapses at the rear of the baffle, thereby preventing rock from flowing into the working face. This can greatly improve underground safety and reduce the labor cost of cleaning rock.

[0013] The shield beam and the rock-blocking device are connected by a pin hinge. Since welding is not possible under underground conditions, the rock-blocking device is designed with one baffle on each side and one on the top and bottom to facilitate installation and disassembly by underground workers. The upper and lower baffles are connected with bolts and nuts. If deformation occurs during normal use, it can be replaced manually underground. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation of the detachable end bracket rock-blocking device;

[0015] Figure 2 This is a front view of the detachable end bracket retaining device.

[0016] Figure 3 This is a side view of the detachable end bracket retaining device.

[0017] Figure 4 This is a schematic diagram of the swing limit structure.

[0018] In the diagram: 1-End hydraulic support; 2-Shield beam; 2.1-Vertical rib plate; 3-Upper baffle; 3.1-Upper support plate; 3.2-Upper transverse stiffener; 3.3-Upper vertical stiffener; 4-Lower baffle; 4.1-Lower support plate; 4.2-Lower transverse stiffener; 4.3-Lower vertical stiffener; 5-Connecting plate. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0020] like Figures 1-4 As shown: A detachable end support rock-blocking device, the upper end of the rock-blocking device is hinged to the shield beam 2 of the end hydraulic support 1 by a pin; when no external force is applied, the rock-blocking device remains vertical, and under the action of external force, the rock-blocking device can swing towards the end hydraulic support 1, and a swing limiting structure is provided between the rock-blocking device and the shield beam 2; the rock-blocking device is divided into two independent left and right parts; each part includes an upper baffle 3 and a lower baffle 4, which are connected by bolts.

[0021] The swing limit structure restricts the maximum swing angle of the rock-blocking device to 15°. When rock rushes into the rear space of the base from the rear, the swing angle of the rock-blocking device has a buffering effect on the rushing rock, which greatly improves the safety of underground production and reduces the time for cleaning up rock.

[0022] A connecting plate 5 extending upwards is provided on the lower baffle 4. The upper end of the lower baffle 4 is aligned with the lower end of the upper baffle 3. The connecting plate 5 covers the upper baffle 3 and is connected to the upper baffle 3 by bolts. The upper baffle 3 and the lower baffle 4 are connected by the connecting plate 5 and bolts, which facilitates disassembly while increasing structural strength by using the connecting plate 5 to prevent twisting or breakage at the connection between the upper baffle 3 and the lower baffle 4.

[0023] The upper baffle 3 includes an upper support plate 3.1. On the side of the upper support plate 3.1 facing the end hydraulic support 1, there are upper transverse stiffeners 3.2 and upper vertical stiffeners 3.3. Two of the upper vertical stiffeners 3.3 extend upwards, and pin holes are opened at the extended ends of the two upper vertical stiffeners 3.3. The two upper vertical stiffeners 3.3 extend into the space between the two vertical ribs 2.1 of the shield beam 2. Pins are inserted into the pin holes of the upper vertical stiffeners 3.3 and the pin holes of the vertical ribs 2.1 for connection.

[0024] The lower baffle 4 includes a lower support plate 4.1. The side of the lower support plate 4.1 facing the end hydraulic support 1 has a lower transverse stiffener 4.2 and a lower vertical stiffener 4.3. The lower vertical stiffener 4.3 is aligned with the upper vertical stiffener 3.3 of the upper baffle 3.

[0025] The upper transverse stiffener 3.2 of the upper baffle 3 is stopped by the vertical rib 2.1 of the shield beam 2, which constitutes a swing limit.

[0026] The upper vertical stiffener 3.3 gradually decreases in height from top to bottom, and the lower vertical stiffener 4.3 is flush with the short end of the upper vertical stiffener 3.3 along its entire length. While ensuring the strength of the structural components, the weight of the lower baffle 4 is designed to be within 300kg, and if deformation occurs during normal use, it can be manually installed and disassembled underground.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A detachable end support and blocking device, characterized in that: The upper end of the gangue blocking device is hingedly connected with the canopy beam (2) of the end hydraulic support (1); the gangue blocking device remains vertical without external force, and can swing towards the end hydraulic support (1) under the action of external force, and swing limiting structure is arranged between the gangue blocking device and the canopy beam (2); the gangue blocking device is divided into independent left and right parts; each part comprises an upper baffle (3) and a lower baffle (4), and the upper baffle (3) and the lower baffle (4) are combined by bolts.

2. The disassemblable end support and stone blocking device according to claim 1, characterized in that: The lower baffle (4) is provided with an upwardly extending connecting plate (5), the upper end of the lower baffle (4) is butted with the lower end of the upper baffle (3), the connecting plate (5) covers the upper baffle (3), and the connecting plate (5) and the upper baffle (3) are connected by bolts.

3. The dismountable end head support and stone blocking device according to claim 2, characterized in that: The upper baffle (3) comprises an upper support plate (3.1), one side of the upper support plate (3.1) facing the end hydraulic support (1) is distributed with upper transverse rib plates (3.2) and upper vertical rib plates (3.3), wherein two upper vertical rib plates (3.3) extend upwards, the extension ends of the two upper vertical rib plates (3.3) are provided with pin holes, and the two upper vertical rib plates (3.3) extend into two vertical rib plates (2.1) of the canopy beam (2), and the pin holes of the upper vertical rib plates (3.3) and the pin holes of the vertical rib plates (2.1) are connected by a pin shaft.

4. The disassemblable end support and stone blocking device according to claim 3, characterized in that: The lower baffle (4) comprises a lower support plate (4.1), one side of the lower support plate (4.1) facing the end hydraulic support (1) is distributed with lower transverse rib plates (4.2) and lower vertical rib plates (4.3), and the lower vertical rib plates (4.3) are aligned with the upper vertical rib plates (3.3) of the upper baffle (3).

5. The disassemblable end support and stone blocking device of claim 1, wherein: The swing limiting structure limits the maximum swing angle of the gangue blocking device to 15°.

6. The disassemblable end support and stone blocking device of claim 3, wherein: The upper transverse rib plates (3.2) of the upper baffle (3) are limited by the vertical rib plates (2.1) of the canopy beam (2) to constitute swing limiting.

7. The disassemblable end support and blockage device according to claim 4, characterized in that: The upper vertical rib plates (3.3) gradually become shorter from top to bottom, and the length of the lower vertical rib plates (4.3) is flush with the shorter end of the upper vertical rib plates (3.3).

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