A hydraulic support capable of preventing tipping and movement

Abstract

The present invention discloses a hydraulic support that prevents tipping and movement. An upper box is arranged below the top beam, the upper box includes an inner box and an outer box, the outer box is mounted on the outer side of the inner box, and a through hole is arranged on the inner box; a lower box is arranged behind the base of the hydraulic support, the lower box includes an inner box and an outer box that are arranged horizontally, the outer box is mounted on the outer side of the inner box, and a through hole is arranged on the inner box; the through hole is a slotted hole, and the length of the slotted hole is greater than the step length of the hydraulic support. The advantages of the present invention are: by arranging the upper box and the lower box, interference between the connecting rod and the hydraulic support is avoided when the hydraulic support moves, so that the upper part of the hydraulic support is connected as a whole and does not tip over, and the lower connecting rod positions the base of the hydraulic support, ensuring that the hydraulic support does not move.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, in particular to a coal mining support. Background Art

[0002] In coal mining, the thickness of coal seams varies. When thin coal seams are mined underground, the thickness is less than 1.3 meters, while when thick coal seams are mined underground, the thickness is 3.5 meters to 8.0 meters. Moreover, the coal seams are not on the same horizontal plane. Sometimes, there is a large height difference between the two ends of the coal seams. Therefore, when mining such coal seams, hydraulic supports are prone to tipping and moving, making it impossible to carry out coal mining operations. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a hydraulic support for mining inclined coal seams, which can overcome the tipping and movement of the hydraulic support. The specific technical solution is as follows:

[0004] A hydraulic support that prevents tipping and movement, an upper box is arranged below the top beam, the upper box includes an inner box and an outer box, the outer box is mounted on the outside of the inner box, and a through hole is arranged on the inner box; a lower box is arranged behind the base of the hydraulic support, the lower box includes an inner box and an outer box arranged horizontally, the outer box is mounted on the outside of the inner box, and a through hole is arranged on the inner box; the through hole is a slotted hole, and the length of the slotted hole is greater than the step length of the hydraulic support. A spring is arranged in the outer box, and the two ends of the spring are respectively in contact with the inner box and the outer box cover.

[0005] The advantages of the present invention are: by setting up the upper box and the lower box, the interference between the rotation of the connecting rod and the top beam of the hydraulic support when the hydraulic support moves is avoided, so that the upper part of the hydraulic support is connected as a whole and will not tip over, and the lower connecting rod positions the base of the hydraulic support, ensuring that the hydraulic support will not move. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of the present invention;

[0007] Figure 2 for Figure 1 Left view of

[0008] Figure 3 for Figure 1 Right view of;

[0009] Figure 4 It is a structural schematic diagram of a hydraulic support;

[0010] Figure 5 for Figure 2 Enlarged view of part A in the middle;

[0011] Figure 6It is the assembly diagram of the inner square box and the outer square box. DETAILED DESCRIPTION

[0012] The present invention is described in detail below in conjunction with the accompanying drawings. As shown in the figure, an upper chute 3 is provided with an upper chute support 1, a lower chute 4 is provided with a lower chute support 2, a hydraulic support 5 is arranged side by side between the upper chute and the lower chute, a coal mining machine 8 is arranged below the hydraulic support, a conveyor 9 is arranged below the coal mining machine, and the tail of the conveyor 81 is connected to the conveyor jack 82; the upper chute 3 is located above the lower chute 4, so that an inclination angle a between the coal mining working face and the horizontal plane is formed, and sometimes the inclination angle is greater than 45 degrees. In this case, the hydraulic support is very easy to tip over and send swaying; to solve this technical problem, the present invention adopts the following technical scheme: an upper connecting rod 6 and a lower connecting rod 7 are arranged between the upper chute 3 and the lower chute 4, and the upper connecting rod 6 passes through the through hole of the upper box of each hydraulic support. The lower connecting rod 7 passes through the through hole of the lower box of each hydraulic support and is connected to the upper chute support and the lower chute support through the jack; the present invention improves the hydraulic support, an upper box is arranged below the top beam 51 of the hydraulic support, the upper box includes an inner square box 53 and an outer square box 52, the outer square box is sleeved on the outer side of the inner square box, and a through hole 55 is arranged on the inner square box, the through hole is a slot hole, and has a certain length to ensure that there is no interference when the hydraulic support moves; a lower box is arranged behind the base 57 of the hydraulic support, the lower box includes an inner square box 53 and an outer square box 52 arranged horizontally, the outer square box is sleeved on the outer side of the inner square box, and a through hole 55 is arranged on the inner square box; Figure 4 In the figure, the hydraulic support includes a pushing cylinder 58 and a top beam hydraulic cylinder 59. A four-link rod 551 is also arranged on the base. The four-link rod is fixed to the shielding beam 54, and the shielding beam 54 is axially connected to the top beam 51.

[0013] The purpose of setting the inner square box 53 and the outer square box 52 is to ensure that when the adjacent hydraulic supports move, the influence of the movement of the hydraulic supports on the upper connecting rod and the lower connecting rod can be offset by the relative movement of the inner square box and the outer square box, so as to avoid interference and immobility.

[0014] A spring 541 is disposed in the outer square box 52, and two ends of the spring are respectively in contact with the inner square box and the outer square box cover 56.

[0015] The present invention further discloses a method for fixing and moving a large-angle coal mining support, wherein an upper connecting rod and a lower connecting rod are arranged between an upper chute support and a lower chute support, wherein the upper connecting rod passes through a through hole of an upper box of each hydraulic support and is connected to the upper chute support and the lower chute support through a jack; the lower connecting rod passes through a through hole of a lower box of each hydraulic support and is connected to the upper chute support and the lower chute support through a jack; during movement, since the top beam of the hydraulic support must be disengaged from the upper support plate before it can be moved, when the top beam of a hydraulic support rotates downward and disengages from the support plate, the inner square box of the upper box moves upward in the outer square box to ensure that the height of the upper connecting rod remains unchanged; when the hydraulic support moves in a direction perpendicular to the lower connecting rod, the inner square box of the lower box slides in the outer square box to ensure that the horizontal position of the lower connecting rod remains unchanged; after all the hydraulic supports are moved, the upper connecting rod and the lower connecting rod are moved by the jacks at both ends of the upper connecting rod and the lower connecting rod. The movement of the hydraulic support is driven by a push cylinder 58 arranged on the hydraulic support.

[0016] The upper connecting rod and the lower connecting rod are both segmented structures, and each segment includes a slider. After the slider passes through the through hole, the two ends of the slider are connected to the segment rod. The slider is connected to the segment rod through a pin, that is, pin holes are set at both ends of the slider, and pin holes are also set at the end of the segment rod. After the pin is inserted into the pin hole, the segment rod and the slider are connected as a whole; to further ensure the positioning function, the length of the pin is greater than the inner diameter of the through hole, so that each upper box and / or lower box is positioned along the axial direction of the upper connecting rod and / or the lower connecting rod to better prevent the hydraulic support from tipping over and moving.

Claims

1. A hydraulic support that prevents tipping and movement, characterized in that: An upper box is arranged below the top beam, the upper box comprises an inner box and an outer box, the outer box is mounted on the outer side of the inner box, and a through hole is arranged on the inner box; a lower box is arranged behind the base of the hydraulic support, the lower box comprises an inner box and an outer box arranged horizontally, the outer box is mounted on the outer side of the inner box, and a through hole is arranged on the inner box; the through hole is a slot hole, the length of the slot hole is greater than the step length of the hydraulic support; an upper connecting rod and a lower connecting rod are arranged between the upper chute and the lower chute, the upper connecting rod passes through the through hole of the upper box of each hydraulic support and is connected to the upper chute support and the lower chute support through a jack; the lower connecting rod passes through the through hole of the lower box of each hydraulic support and is connected to the upper chute support and the lower chute support through a jack.

2. The anti-dumping and anti-movement hydraulic support according to claim 1, characterized in that: A spring is arranged in the outer square box, and two ends of the spring are respectively in contact with the inner square box and the outer square box cover.

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