A protection device of a mine hydraulic support

Abstract

The utility model relates to a kind of protection device of mine hydraulic support, and the beam body below hydraulic support is fixed with four sleeves that are arranged side by side and interval, it is characterized in that, including a pair of symmetrically arranged on the both sides of hydraulic support guard plate structure, a pair of guard plate structure can be telescopic in horizontal direction, for the lap joint space interval between adjacent hydraulic support, prevent between hydraulic support leak gangue;The guard plate structure includes side plate, four sleeve seats that are arranged side by side and interval are equipped in the lower outside end of side plate, sleeve seat is fixed with side plate by the upper longitudinal rib plate of its top end, four jacks are respectively set in sleeve, jack bottom end is inserted into sleeve seat and is fixed with it, jack piston rod end is fixed with sleeve.The overall strength is high, avoid the deformation of hydraulic support in adjusting frame, effectively prevent between frame leak gangue, and play the role of supporting roof, additionally when hydraulic support rises frame, lower frame and move frame, play guiding effect, maintain the transverse stability of hydraulic support, and safety performance is high.

Description

Technical Field

[0001] This utility model relates to coal mine support equipment, specifically to a protective device for a mining hydraulic support. Background Technology

[0002] With the development of coal mining technology, large-scale fully mechanized mining equipment and hydraulic supports with stronger support capabilities have been widely used. In fully mechanized mining faces, especially steeply inclined faces, hydraulic supports are prone to leakage and shifting due to factors such as gaps between supports, uneven ground, uneven conveyors, and uneven stress. Severe leakage directly affects the safety of coal miners, while uncorrected shifting can lead to support collapse and damage to the hydraulic supports. Current technology typically uses side protection devices installed on the top beam and shield beam to prevent leakage. However, these devices often lack sufficient strength due to unreasonable structure, are prone to deformation, and struggle to maintain lateral stability, posing a safety hazard. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a protective device for a mining hydraulic support.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for a mining hydraulic support, wherein four sleeves are fixedly arranged side by side and spaced apart below the beam of the hydraulic support, characterized in that it includes a pair of protective plate structures symmetrically arranged on both sides of the hydraulic support, the pair of protective plate structures being able to extend and retract in the horizontal direction, used to overlap the gap between adjacent hydraulic supports, and to prevent leakage of gangue between hydraulic supports.

[0005] The protective plate structure includes a side plate, and four sleeves are arranged side by side and spaced apart below the outer end of the side plate. The center lines of the sleeves and the sleeves are on the same horizontal straight line. The sleeves are fixed to the side plate by the upper longitudinal stiffener at their top end, and a first transverse stiffener is fixed between adjacent sleeves. Four jacks are respectively installed in the sleeves, and the bottom ends of the jacks are inserted into the sleeves and fixed thereto. The piston rod ends of the jacks are fixed to the sleeves.

[0006] The outer end of the side plate is provided with a guide plate that is fixed perpendicularly thereto. The inner side of the guide plate is fixed to the upper longitudinal stiffener. Four round holes corresponding to the jacks are opened on the guide plate for removing the jacks from the round holes during maintenance.

[0007] The bottom surface of the sleeve is fixed with a lower longitudinal stiffening plate, and the lower longitudinal stiffening plate is fixed to the inner side of the guide plate. A second transverse stiffening plate is fixed between the lower longitudinal stiffening plates. The sleeve, the first transverse stiffening plate, the lower longitudinal stiffening plate and the second transverse stiffening plate form a grid box structure to increase the overall strength.

[0008] The inner diameter of the sleeve is matched with the outer diameter of the jack cylinder. The sleeve has a through hole for the first pin to pass through the through hole and fix the bottom end of the jack in the sleeve.

[0009] The bottom of the sleeve is fixed with a stop pin seat. The sleeve and the stop pin seat have through holes on the same vertical line. The second pin passes through the stop pin seat into the through hole to fix the piston rod end of the jack to the sleeve. The second pin is also locked by a U-shaped clip fixed on the stop pin seat to prevent it from falling off.

[0010] The circular hole is aligned with the center of the sleeve and the socket; the inner diameter of the circular hole is slightly larger than the outer diameter of the jack cylinder.

[0011] The beneficial effects of this utility model are as follows: the upper longitudinal stiffener and the lower longitudinal stiffener are used to ensure the stability of the guide plate. The grid box structure composed of the sleeve, the first transverse stiffener, the lower longitudinal stiffener and the second transverse stiffener can increase the overall strength, prevent the hydraulic support from deforming during the adjustment of the support, effectively prevent the leakage of rock between the supports, and play a role in supporting the top plate. In addition, it plays a guiding role when the hydraulic support is raised, lowered and moved, maintaining the lateral stability of the hydraulic support and ensuring high safety performance. Attached Figure Description

[0012] Figure 1 This is the front view of the present utility model;

[0013] Figure 2 This is a longitudinal sectional view of the present invention.

[0014] Figure 3 This is a schematic diagram of the usage state of this utility model;

[0015] In the diagram: 1-side plate, 2-guide plate, 21-round hole, 3-sleeve, 4-upper longitudinal stiffener, 5-first transverse stiffener, 6-lower longitudinal stiffener, 7-second transverse stiffener, 8-jack, 9-first pin, 10-second pin, 11-hydraulic support, 12-beam, 13-sleeve, 14-stop pin seat, 15-U-shaped clamp. Detailed Implementation

[0016] See Figure 1-3 A protective device for a mining hydraulic support, wherein four sleeves 13 are fixed below the beam 12 of the hydraulic support 11, arranged side by side and spaced apart. The device is characterized by including a pair of protective plate structures symmetrically arranged on both sides of the hydraulic support 11. The pair of protective plate structures can extend and retract in the horizontal direction to overlap the gap between adjacent hydraulic supports 11 and prevent the leakage of gangue between the hydraulic supports 11.

[0017] The protective plate structure includes a side plate 1. Four sleeves 3 are arranged side by side and spaced apart below the outer end of the side plate 1. The center lines of the sleeves 3 and the sleeves 13 are on the same horizontal straight line. The sleeves 3 are fixed to the side plate 1 by the upper longitudinal stiffener 4 at their top ends. A first transverse stiffener 5 is fixed between adjacent sleeves 3. Four jacks 8 are respectively arranged in the sleeves 13. The bottom ends of the jacks 8 are inserted into the sleeves 3 and fixed thereto. The piston rod ends of the jacks 8 are fixed to the sleeves 13.

[0018] The outer end of the side plate 1 is provided with a guide plate 2 that is fixed perpendicularly thereto. The inner side of the guide plate 2 is fixed to the upper longitudinal stiffener 4. Four round holes 21 are opened on the guide plate 2 that correspond one-to-one with the jack 8, so that the jack 8 can be taken out from the round holes 21 during maintenance.

[0019] The bottom surface of the sleeve 3 is fixed with a lower longitudinal stiffener 6, and the lower longitudinal stiffener 6 is fixed to the inner side of the guide plate 2. A second transverse stiffener 7 is fixed between the lower longitudinal stiffeners 6.

[0020] The sleeve 3, the first transverse stiffener 5, the lower longitudinal stiffener 6, and the second transverse stiffener 7 form a grid-like box structure, which increases the overall strength.

[0021] The inner diameter of the sleeve 3 matches the outer diameter of the cylinder of the jack 8. The sleeve 3 has a through hole for the first pin 9 to pass through the through hole and fix the bottom end of the jack 8 in the sleeve 3.

[0022] The bottom of the sleeve 13 is fixed with a stop pin seat 14. The sleeve 13 and the stop pin seat 14 have through holes on the same vertical line. The second pin 10 passes through the stop pin seat 14 into the through hole to fix the piston rod end of the jack 8 to the sleeve 13. The second pin 10 is locked by the U-shaped clip 15 fixed on the stop pin seat 14 to prevent it from falling off.

[0023] The center of the circular hole 21 is on the same straight line as the center of the sleeve 3 and the sleeve 13; the inner diameter of the circular hole 21 is slightly larger than the outer diameter of the cylinder of the jack 8.

[0024] How to use:

[0025] See Figure 3 First, insert the piston rod of the jack 8 into the sleeve 13. Connect the cylinder bottom of the jack 8 to the sleeve 3 and fix it with the first pin 9. Then, insert the second pin 10 through the stop pin seat 14 into the through hole on the sleeve 13 and the stop pin seat 14. Fix the piston rod end of the jack 8 to the sleeve 13 and the beam 12. Secure the second pin 10 with the U-shaped clip 15 fixed on the stop pin seat 14 to prevent it from falling off.

[0026] During use, the position of this utility model can be adjusted by the telescopic movement of the jack 8, thereby enabling anti-rockfall and frame adjustment between the hydraulic supports 11.

[0027] When overhauling jack 8, it is only necessary to remove the first pin 9 and the second pin 10, and then take jack 8 out of the round hole 21. The maintenance is convenient and the labor intensity is low.

Claims

1. A protective device for a mining hydraulic support, wherein four sleeves (13) are fixedly arranged side-by-side and spaced apart below the beam (12) of the hydraulic support (11), characterized in that, It includes a pair of symmetrically arranged guard plate structures on both sides of the hydraulic support (11). The pair of guard plate structures can extend and retract in the horizontal direction to overlap the gap between adjacent hydraulic supports (11) and prevent leakage between hydraulic supports (11). The protective plate structure includes a side plate (1), and four sleeves (3) are arranged side by side and spaced apart below the outer end of the side plate (1). The center lines of the sleeves (3) and the sleeves (13) are on the same horizontal straight line. The sleeves (3) are fixed to the side plate (1) by the upper longitudinal stiffener (4) at their top end. A first transverse stiffener (5) is fixed between adjacent sleeves (3). Four jacks (8) are respectively arranged in the sleeves (13). The bottom end of the jacks (8) is inserted into the sleeves (3) and fixed thereto. The piston rod end of the jacks (8) is fixed to the sleeves (13). The outer end of the side plate (1) is provided with a guide plate (2) that is fixed perpendicularly to it. The inner side of the guide plate (2) is fixed to the upper longitudinal stiffener (4). Four round holes (21) are opened on the guide plate (2) that correspond one-to-one with the jack (8) for removing the jack (8) from the round holes (21) during maintenance.

2. The protective device for a mining hydraulic support as described in claim 1, characterized in that, The bottom surface of the sleeve (3) is fixed with a lower longitudinal stiffener (6), and the lower longitudinal stiffener (6) is fixed to the inner side of the guide plate (2). A second transverse stiffener (7) is fixed between the lower longitudinal stiffener (6). The sleeve (3), the first transverse stiffener (5), the lower longitudinal stiffener (6) and the second transverse stiffener (7) form a grid box structure to increase the overall strength.

3. The protective device for a mining hydraulic support as described in claim 1, characterized in that, The inner diameter of the sleeve (3) matches the outer diameter of the cylinder of the jack (8). The sleeve (3) has a through hole for the first pin (9) to pass through the through hole and fix the bottom end of the jack (8) in the sleeve (3).

4. The protective device for a mining hydraulic support as described in claim 1, characterized in that, The bottom of the sleeve (13) is fixed with a stop pin seat (14). The sleeve (13) and the stop pin seat (14) have through holes located on the same vertical line. The second pin (10) passes through the stop pin seat (14) into the through hole to fix the piston rod end of the jack (8) to the sleeve (13). The second pin (10) is locked by the U-shaped clip (15) fixed on the stop pin seat (14) to prevent it from falling off.

5. The protective device for a mining hydraulic support as described in claim 1, characterized in that, The center of the circular hole (21) is on the same straight line as the center of the sleeve (3) and the sleeve (13); the inner diameter of the circular hole (21) is slightly larger than the outer diameter of the cylinder of the jack (8).

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