Automatic support device for resisting rock burst in mines

Patent metadata

Field	Value
Publication number	US-2025034996-A1
Application number	US-202418818611-A
Country	US
Kind code	A1
Filing date	Aug 29, 2024
Priority date	Jul 28, 2023
Publication date	Jan 30, 2025
Grant date	—

Abstract

An automatic support device for resisting rock burst in mines is provided, which includes bases symmetrically distributed, sliding frames are slidably connected to the bases, hydraulic rods are fixedly connected to the bases, and telescopic ends of the hydraulic rods are fixedly connected to the adjacent sliding frames. The sliding frames are fixedly connected to brackets, and the brackets symmetrically distributed are provided with a main support plate, on which pushing rods are provided. The device can slow down the impact force of the device when rock burst occurs in the mine, at the same time, it plays a supporting role in the mine, ensuring the stability of the roof of the mine.

First claim

What is claimed is:

1 . An automatic support device for resisting rock burst in mines, comprising bases symmetrically distributed, sliding frames are slidably connected to the bases, hydraulic rods are fixedly connected to the bases, telescopic ends of the hydraulic rods are fixedly connected to the adjacent sliding frames, brackets are fixedly connected to the sliding frames, the brackets symmetrically distributed are provided with a main support plate, the main support plate is provided with first pushing rods evenly spaced and symmetrically distributed and third pushing rods evenly spaced and symmetrically distributed, the main support plate is fixedly connected to second pushing rods symmetrically distributed and fourth pushing rods symmetrically distributed, the first pushing rods with evenly spaced are communicated with the first oil pipe communicated with the adjacent second pushing rods, the third pushing rods with evenly spaced are communicated with the second oil pipe communicated with the adjacent fourth pushing rods, and telescopic ends of the first pushing rods symmetrically distributed and telescopic ends of the third pushing rods symmetrically distributed are both fixedly connected to upper retaining plates; the main support plate is provided with a pressure regulating assembly for adjusting the positions of the first pushing rods and the third pushing rods, the upper retaining plates with equidistant distribution are fixedly connected to a top plate, the second pushing rods and the fourth pushing rods are respectively slidably connected to piston plates, springs are fixedly connected between the second pushing rods and adjacent piston plates, and between the fourth pushing rods and adjacent piston plates; and the first pushing rods, the second pushing rods, the third pushing rods, and the fourth pushing rods all contain hydraulic fluid; the pressure regulating assembly comprises sixth pushing rods with equal spacing and symmetrical distribution, wherein the sixth pushing rods are fixedly connected to the main support plate, the first pushing rods are fixedly connected to telescopic ends of the adjacent sixth pushing rods, the third pushing rods are fixedly connected to the telescopic ends of the adjacent sixth pushing rods, the sixth pushing rods are provided with first chambers and second chambers, the first chambers with equidistant distribution are communicated with a third oil pipe, the third oil pipe is communicated with the adjacent fourth pushing rods, the second chambers with equidistant distribution are communicated with the fourth oil pipe, the fourth oil pipe is communicated with the adjacent second pushing rods, and both the first pushing rods and the third pushing rods are in a sliding fit with the main support plate.

2 . The automatic support device for resisting rock burst in mines according to claim 1 , wherein the main support plate is provided with side support plates symmetrically distributed, and the side support plates are fixedly connected with fifth pushing rods symmetrically distributed, telescopic end of the fifth pushing rods symmetrically distributed are jointly fixedly connected to the side support plates, and the fifth pushing rods contain hydraulic fluid.

3 . The automatic support device for resisting rock burst in mines according to claim 1 , further comprising a sliding mechanism, wherein the sliding mechanism is set on the main support plate and used to separate the sliding frames in symmetrical distribution towards to both sides; the sliding mechanism comprises a fixed seat, wherein the fixed seat is fixedly connected to the main support plate, the fixed seat is installed with a servo motor, and an output shaft of the servo motor is fixedly connected with a spur gear, the fixed seat is slidably connected with sliding plates in symmetrical distribution, each of the sliding plates in symmetrical distribution is provided with a rack that mesh with the spur gear, the sliding plates in symmetrical distribution are respectively matched with adjacent sliding frames; springs are fixedly connected between the sliding plates in symmetrical distribution and the adjacent sliding frames, each of the brackets symmetrically distributed is slidably connected to an upper friction plate; a first pulling rope is fixedly connected between the upper friction plate and the adjacent sliding plates, the upper friction plate and adjacent brackets are fixedly connected to tension springs, the brackets symmetrically distributed are slidably connected to sliding seats, the sliding seats are in sliding fit with the main support plate, the sliding seats are fixedly connected to adjacent side support plates, the sliding seats are provided with a first locking assembly for fixing the brackets, and the sliding seats are provided with a second locking assembly for fixing itself.

4 . The automatic support device for resisting rock burst in mines according to claim 3 , wherein the first locking assembly comprises ratchet bars in symmetrically distribution, the ratchet bars in symmetrically distribution are respectively fixedly connected to adjacent sliding seats, the brackets symmetrically distributed are respectively rotatably connected to pawls, the pawls match with the corresponding ratchet bars, torsion springs are fixedly connected between the pawls and the adjacent brackets, a second tension rope is fixedly connected to the pawls, and the second tension rope is fixedly connected to the adjacent sliding plates.

5 . The automatic support device for resisting rock burst in mines according to claim 3 , wherein the side support plates in symmetrically distribution are respectively slidably connected to lower friction plates, the lower friction plates match with the adjacent upper friction plates, the bracket match with the adjacent side support plates, the frictional force between the upper friction plates and the lower friction plates is greater than the frictional force between the sliding seats and the adjacent brackets.

6 . The automatic support device for resisting rock burst in mines according to claim 3 , wherein the second locking assembly comprises first spring blocks in symmetrically distribution, the first spring blocks in symmetrically distribution are respectively set on the adjacent sliding seats, a third pulling rope is fixedly connected between the first spring blocks and the adjacent lower friction plates, the main support plate is provided with first limiting grooves distributed at equal intervals, and the first spring blocks match with the first limiting grooves of the adjacent main support plate.

7 . The automatic support device for resisting rock burst in mines according to claim 1 , further comprising a buffer assembly, wherein the buffer assembly is set on the bases symmetrically distributed and used to fix the bases symmetrically distributed; the buffer assembly comprises contact frames with equal spacing and symmetrical distribution, and the contact frames with equal spacing are respectively slidably connected to adjacent bases, the bases are fixedly connected to retractable rods with equal spacing distribution, telescopic ends of the retractable rods are fixedly connected to adjacent contact frames, the bases are slidably connected to locking plates fixedly connected to the adjacent sliding frames, the bases are slidably connected to irregular frames with equal spacing distribution, the irregular frames are in limit fit with adjacent contact frames, the irregular frames are in limit fit with adjacent locking plates, the bases are provided with second spring blocks symmetrically distributed, the second spring blocks are in limit fit with the contact frames, and the second spring blocks are in limit fit with the irregular frames.

8 . The

Assignees

• Univ Shandong Science & Tech

Inventors

• Guo Weiyao
• Xu Linpeng
• Chen Lexin
• Zhao Yongqiang
• Li Bo
• Xia Chengzhi
• Zhu Chun
• Li Gan
• Zhang Lei

Classifications

• E21D15/44 Primary

  Hydraulic, pneumatic, or hydraulic-pneumatic props {(see also E21D15/51)} · CPC title

• Y02A10/23

  Dune restoration or creation; Cliff stabilisation · CPC title

• E21D23/16

  Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices · CPC title

• E21D23/04 Primary

  Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor (E21D23/14 takes precedence) · CPC title