CN109779666B - An anti-tipping safety hydraulic support - Google Patents

Abstract

The invention belongs to the field of coal mining support equipment, and specifically discloses an anti-tipping safety hydraulic support, which comprises a bottom adjustment mechanism arranged on a support base, and the bottom adjustment mechanism comprises a rotating sleeve rotatably connected to the front and rear ends of the support base. A sliding sleeve is slidably connected in the inner sliding sleeve, and an insertion rod capable of extending into the sliding sleeve on the next bracket base is slidably connected in the sliding sleeve, and a locking mechanism is connected between the rotating sleeve and the sliding sleeve. The invention can solve the problem that the hydraulic support base sinks due to the soft bottom plate of the working surface, thereby causing the hydraulic support to fall down.

Description

An anti-tipping safety hydraulic support

technical field

The invention relates to the field of coal mining support equipment, in particular to an anti-dumping safety hydraulic support.

Background technique

Hydraulic support is an important part of fully mechanized mining equipment in coal mines. It uses hydraulic pressure as power to realize movements such as lifting and moving forward. It can reliably and effectively support and control the roof of the working face, isolate the goaf, and prevent gangue from entering the mining face and Promote the conveyor; use it in conjunction with the coal shearer to realize the comprehensive mechanization of coal mining, solve the contradiction that the roof management in coal mining work lags behind the coal mining work, further improve and improve the efficiency of coal mining and transportation equipment, and reduce the labor intensity of coal miners , to maximize the safety of coal miners' lives.

During the production process of the fully mechanized coal mining face, especially the mining of the high-inclined coal face, the hydraulic support is in the process of moving, and the component force of the support's dead weight in the inclined direction of the working face will cause the support to slide down the inclined surface, and The greater the inclination angle, the more severe the slide. The tipping of the hydraulic support can easily lead to the loss of control of the roof management and cause the roof leakage accident. If the amount of roof leakage is too large, it will cause the working face to stop production, so that coal cannot be produced, and in severe cases, it will endanger personal safety, and even lead to fatal accidents.

There are many reasons for the overturning of the hydraulic support. One of the reasons is that the bottom plate of the working surface is soft or there are too many floating coal and floating gangue, which causes the support base to sink and the pressure is uneven. lead to a crash accident.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an anti-overturning safety hydraulic support to solve the problem that the hydraulic support base sinks due to the loose bottom plate of the working face or the excessive floating coal and floating gangue, which leads to the hydraulic support falling down.

To achieve the above object, the present invention adopts the following technical solutions:

An anti-overturning safety hydraulic support comprises a bottom adjustment mechanism arranged on the support base, the bottom adjustment mechanism comprises a rotating sleeve rotatably connected to the front and rear ends of the support base, a sliding sleeve is slidably connected in the rotating sleeve, and a sliding sleeve is slidably connected in the sliding sleeve. The insertion rod can be inserted into the sliding sleeve on the base of the next bracket, and a locking mechanism is connected between the rotating sleeve and the sliding sleeve.

The principle of this scheme is:

The rotating sleeve is the installation support mechanism of the sliding sleeve, and the locking mechanism is used to realize the locking between the rotating sleeve and the sliding sleeve. When the rotating sleeve is in a vertical state, the insertion rod of the sliding sleeve is inserted downward into the bottom plate of the working surface, which can increase the gripping force between the original hydraulic support base and the bottom plate of the working surface. Compared with simply using the friction between the original bracket base and the bottom plate of the working surface to prevent slipping and falling, inserting the rod into the bottom plate of the working surface can enhance the anti-skid and anti-falling effect of the original bracket base. When the rotating sleeve rotates 90°, the sliding sleeve in the rotating sleeve changes from a vertical state to a direction along the inclination of the coal seam. At this time, the plunger in the sliding sleeve is extended and inserted into the sliding sleeve on the base of the next hydraulic support, the plunger and the sliding sleeve on each hydraulic support cooperate with each other in turn, forming two long rods on the front and rear sides of the hydraulic support like structure. When the hydraulic support is moved, it can slide on the long rod-shaped structure, that is, the long rod-shaped structure acts as a sliding track for each hydraulic support when it is moved, and plays a guiding role for the hydraulic support.

This solution can achieve the following technical effects:

1. When the hydraulic support is moved, the plunger and the sliding sleeve on each hydraulic support cooperate with each other to form a sliding track for the hydraulic support to move. Due to the support of the sliding track to the hydraulic support, even if the bottom plate of the working face is partially loose, the hydraulic support can be prevented from tipping over due to the subsidence of the hydraulic support base.

2. The sliding sleeves and inserting rods on each hydraulic support have two functions. One is that when the sliding sleeve is in a vertical state, the inserting rods slide down in the sliding sleeve and are inserted into the bottom plate of the working face to enhance the relationship between the base of the support and the bottom plate of the working face. Second, when the sliding sleeve is in the direction of the inclination of the coal seam, the insertion rod slides along the sliding sleeve and is inserted into the sliding sleeve on the next hydraulic support, so that the The insertion rod and the sliding sleeve cooperate with each other to form a sliding track for the hydraulic support to move the frame, so as to avoid the problem of tipping when the hydraulic support is moved. The present invention performs anti-falling treatment in both the working state and the moving state of the hydraulic support, and the anti-falling effect is good.

Further, a partition is arranged in the middle of the sliding sleeve, and the partition divides the sliding sleeve into an insertion area and an insertion and matching area. Pole fixed connection. The bottom adjustment jack is used to drive the insertion rod to slide in the insertion area of the sliding sleeve, and after the hydraulic support is moved, the piston end of the bottom adjustment jack continues to extend. After the clapboards are in contact with each other, the bottom adjustment jack continues to drive the insertion rod to extend out of the sliding sleeve, and the insertion rod can drive the sliding sleeve to slide and reset on the hydraulic support.

Further, the support base is provided with a conversion motor for driving the rotation of the rotating sleeve. Through the drive of the conversion motor, the rotating sleeve can be driven to rotate forwardly and reversely, thereby driving the sliding sleeve in the rotating sleeve to rotate forwardly and reversely, so as to realize the switching between the vertical direction of the sliding sleeve and the inclination direction of the coal seam.

Further, the locking mechanism includes a locking hydraulic cylinder fixed on the rotating sleeve and a through hole opened on the sliding sleeve, and the output rod of the locking hydraulic cylinder can be inserted into the through hole to realize the locking between the rotating sleeve and the sliding sleeve. Insert the output rod of the locking hydraulic cylinder into the through hole on the sliding sleeve to achieve locking between the rotating sleeve and the sliding sleeve; the output rod of the locking hydraulic cylinder can be pulled out from the through hole on the sliding sleeve to achieve Release the lock between the rotating sleeve and the sliding sleeve.

Further, the front and rear ends of the support base are welded with vertical plates, and the two rotating sleeves are respectively connected to the two vertical plates in rotation. Since the existing hydraulic support base is directly placed on the bottom plate of the working surface, and the thickness of the support base is small, it is inconvenient for the rotation of the rotating sleeve and the sliding sleeve. The present invention directly welds the vertical plate on the existing support base, which is convenient for the rotating sleeve and the sliding sleeve The rotation of the existing hydraulic support structure does not change.

Description of drawings

Fig. 1 is the front view of the embodiment of the present invention, and the hydraulic support is in the state of moving frame;

Fig. 2 is the schematic diagram of the hydraulic support in the working state in Fig. 1;

Figure 3 is an enlarged view of part A in Figure 1;

Fig. 4 is an enlarged view of part B in Fig. 3;

FIG. 5 is a cross-sectional view of a-a in FIG. 3 .

Detailed ways

The following is further described in detail by specific embodiments:

Reference numerals in the accompanying drawings include: bracket base 1, vertical plate 2, sliding sleeve 3, partition plate 30, through hole 300, insertion area 301, insertion and matching area 302, insertion rod 4, bottom adjustment jack 5, rotating sleeve 6. Rotating shaft 60 , locking hydraulic cylinder 7 , converting motor 8 .

As shown in FIG. 1 and FIG. 2 , the anti-tipping safety hydraulic support of this embodiment includes a bottom adjustment mechanism arranged on the support base 1 . 3, 4 and 5, the bottom adjustment mechanism includes a vertical plate 2 welded on the front and rear ends of the support base 1 and a rotating shaft 60 passing through the vertical plate 2; a conversion motor 8 is installed on the inner side of the vertical plate 2 , the output shaft of the conversion motor 8 is welded with the rotating shaft 60, the outer end of the rotating shaft 60 is welded with a rotating sleeve 6, the rotating sleeve 6 is slidably connected with a sliding sleeve 3, and the inner middle of the sliding sleeve 3 is welded with a partition 30, and the partition 30 connects the sliding sleeve 3 is divided into an insertion area 301 on the right side and an insertion and matching area 302 on the left; the insertion area 301 is slidably connected with an insertion rod 4, and the insertion rod 4 can extend into the sliding sleeve 3 on the next bracket base 1 and insert into the matching area 302; A bottom adjusting jack 5 is installed on the right end face of the partition plate 30 , and the piston end of the bottom adjusting jack 5 is welded with the end of the insertion rod 4 . A locking mechanism is connected between the rotating sleeve 6 and the sliding sleeve 3. The locking mechanism includes a locking hydraulic cylinder 7 fixed on the rotating sleeve 6 and a through hole 300 opened on the sliding sleeve 3. The output of the locking hydraulic cylinder 7 The rod can be inserted into the through hole 300 to realize the locking between the rotating sleeve 6 and the sliding sleeve 3 .

When the hydraulic support in this embodiment is in a working state, the sliding sleeves 3 on each hydraulic support are in a vertical state. At this time, the output rod of the locking hydraulic cylinder 7 is extended and inserted into the through hole 300 on the sliding sleeve 3 to realize the locking of the rotating sleeve 6 and the sliding sleeve 3; In the bottom plate, the grasping force between the original hydraulic support base 1 and the bottom plate of the working surface can be increased. Compared with the traditional method of simply using the friction between the support base 1 and the working surface bottom plate to prevent slipping and falling, inserting the rod 4 into the working surface base plate has the effect of positioning the support base 1, which can enhance the anti-skid and fall prevention of the support base 1. Effect.

When the hydraulic support needs to be moved (that is, the hydraulic support slides upward along the inclination direction of the coal seam), the bottom adjustment jack 5 drives the insertion rod 4 to move upward and reset, the conversion motor 8 drives the rotating shaft 60 to rotate, and the rotating shaft 60 drives the rotating sleeve 6 and the rotating sleeve 6 The inner sliding sleeve 3 rotates from the vertical state to the inclination direction of the coal seam; the bottom adjusting jack 5 drives the plunger 4 to slide out of the sliding sleeve 3, and then extends into the insertion and matching area 302 of the sliding sleeve 3 on the next hydraulic support. The insertion rods 4 and the sliding sleeves 3 on each hydraulic support are matched with each other in sequence, and two long rod-shaped rails are formed on the front and rear sides of the hydraulic support. At this time, the output rod of the locking hydraulic cylinder 7 is shortened again, and the locking between the rotating sleeve 6 and the sliding sleeve 3 is released. Slide up in the tilt direction to move the rack. When the hydraulic support is moved, it can slide on the long rod-shaped rail, that is, the long rod-shaped rail acts as a sliding rail for the hydraulic support to guide the hydraulic support. When the bottom plate of the working face is partially soft, the hydraulic support can be prevented from tipping over due to the support of the hydraulic support by the sliding track. After the hydraulic support is moved, the piston end of the bottom adjustment jack 5 continues to extend, and after the free end of the insertion rod 4 is in contact with the partition 30 in the sliding sleeve 3 on the next hydraulic support, the bottom adjustment jack 5 continues to drive the insertion rod 4 to extend. The sliding sleeve 3 is pulled out; the insertion rod 4 exerts pressure on the partition plate 30, and accordingly, the insertion rod 4 is also subjected to the reaction force of the partition plate 30, so that the insertion rod 4 can drive the sliding sleeve 3 to slide and reset on the hydraulic support.

In the present invention, when the hydraulic support is in the working state, the insertion rod 4 can be inserted into the bottom plate of the working face to increase the gripping force between the support base 1 and the bottom plate of the working surface; The cooperation with the sliding sleeve 3 forms a track for each hydraulic support to slide, so as to avoid the problem of the support base 1 sinking due to the loose soil of the working surface. That is to say, the present invention performs anti-falling treatment in both the working state and the moving state of the hydraulic support, and the anti-falling effect is good.

The above descriptions are only embodiments of the present invention, and common knowledge such as well-known specific structures and characteristics in the solution are not described too much here. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the protection scope of the present invention, and these will not affect the implementation of the present invention. Effectiveness and utility of patents. The scope of protection claimed in this application shall be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (3)

1. An anti-overturning safety hydraulic support is characterized in that: it comprises a bottom adjustment mechanism arranged on the support base, and the bottom adjustment mechanism comprises a rotating sleeve that is rotatably connected to the front and rear ends of the support base, and is slidably connected in the rotating sleeve. There is a sliding sleeve, and the sliding sleeve is slidably connected with an insertion rod that can extend into the sliding sleeve on the next bracket base, and a partition is arranged in the middle of the sliding sleeve, and the partition divides the sliding sleeve into an insertion area and a sliding sleeve. Insert into the matching area, the insertion rod is arranged in the insertion area, and the insertion area is provided with a bottom adjustment jack, the piston end of the bottom adjustment jack is fixedly connected with the insertion rod; and between the rotating sleeve and the sliding sleeve A locking mechanism is connected; the support base is provided with a conversion motor for driving the forward and reverse rotation of the rotating sleeve. 2 . The anti-overturning safety hydraulic support according to claim 1 , wherein the locking mechanism comprises a locking hydraulic cylinder fixed on the rotating sleeve and a through hole opened on the sliding sleeve, 2 . The output rod of the locking hydraulic cylinder can be inserted into the through hole to realize the locking between the rotating sleeve and the sliding sleeve. 3. An anti-overturning safety hydraulic support according to claim 1 or 2, wherein the front and rear ends of the support base are welded with vertical plates, and the two rotating sleeves are respectively rotatably connected to the two vertical plates.

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