CN211314721U

CN211314721U - Supporting oil cylinder of four-arm anchor rod machine for mine

Info

Publication number: CN211314721U
Application number: CN201922367592.1U
Authority: CN
Inventors: 刘玉亮; 高震; 朱明普; 张芳卫; 贾飞
Original assignee: Zhengzhou Suda Industrial Machinery Service Co ltd
Current assignee: Zhengzhou Suda Industrial Machinery Service Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-21
Anticipated expiration: 2029-12-25

Abstract

The utility model belongs to the technical field of mining four-arm roof bolter support cylinder in the colliery, specifically disclose a mining four-arm roof bolter support cylinder, including the one-level sleeve pipe, set up in the piston rod that one-level sleeve pipe left end central point put, the piston rod right-hand member is equipped with the piston, one-level sleeve pipe right-hand member inboard is connected with the second grade cylinder body through uide bushing II, and second grade cylinder body outside cover is equipped with the second grade sleeve pipe, the piston stretches into second grade cylinder body left end setting, second grade cylinder body right-hand member outside is equipped with uide bushing I, the second grade cylinder body passes through uide bushing I and is connected with the one-level cylinder body, and the second grade cylinder body right-hand member stretches into the setting of one-level cylinder body, the one-level cylinder body right-hand member has.

Description

Supporting oil cylinder of four-arm anchor rod machine for mine

Technical Field

The utility model belongs to the technical field of mining four-arm roof bolter support cylinder in the colliery, especially, relate to a mining four-arm roof bolter support cylinder.

Background

The anterior support hydro-cylinder of four arm roof bolter that present coal mine used is mostly ordinary single extending structure hydro-cylinder, and under the operational environment that high humidity in the pit, high working resistance and piston rod are in the state of stretching out for a long time, the support hydro-cylinder takes place cladding material to collide with, damage easily in the long-term use, and the piston rod bears roof pressure for a long time and takes place bending deformation easily, influences life, has very big potential safety hazard.

Disclosure of Invention

The utility model aims at providing a mining four-arm roof bolter support cylinder has two extending structure of interior feed liquor, and the cylinder body outside has set up the sleeve pipe, has improved the factor of safety and the life of hydro-cylinder greatly.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a mining four-arm roof bolter support cylinder, includes the one-level sleeve pipe, sets up in the piston rod that one-level sleeve pipe left end central point put, and the piston rod right-hand member is equipped with the piston, one-level sleeve pipe right-hand member inboard is connected with the second grade cylinder body through uide bushing II, and second grade cylinder body outside cover is equipped with the second grade sleeve pipe, the piston stretches into second grade cylinder body left end setting, the second grade cylinder body right-hand member outside is equipped with uide bushing I, the second grade cylinder body passes through uide bushing I and is connected with the one-level cylinder body, and the second grade cylinder body low order end stretches into the one-level cylinder body setting, there.

Further, the piston rod is including the valve piece that is located the piston rod left end portion and the liquid pipe that leads to that is located the piston rod inside, piston rod and valve piece fixed connection, lead to the inside liquid jogged joint of liquid pipe and valve piece, the piston rod is the hollow tube, and the liquid return chamber of the liquid jogged joint valve piece is gone up through the liquid hole that leads to that bores on its inner chamber and the piston rod, one-level sleeve pipe left end passes through flange cover and bolt and is connected with the valve piece.

Furthermore, the second-stage cylinder body comprises an outer cylinder barrel, an inner sleeve and a cylinder bottom, the outer cylinder barrel, the inner sleeve and the cylinder bottom are fixedly welded, an annular piston is arranged at the position, located at the guide sleeve I, of the outer cylinder barrel, a circle of liquid through holes are formed in the annular piston of the outer cylinder barrel along the circumference of the outer cylinder barrel, and liquid through holes corresponding to the inner sleeve are also formed in the corresponding position of the inner sleeve.

Furthermore, the outer surface of the primary cylinder body is plated with chrome, a guide ring is assembled on the excircle of the cylinder opening, a threaded hole is formed in the tail of the primary cylinder body, and the pressure plate is fixedly connected with the tail of the cylinder body through a bolt.

Furthermore, the left end of the second-stage sleeve is provided with a flange sleeve, the tail of the second-stage sleeve is provided with an external thread, and the joint of the outer side of the right end of the second-stage sleeve and the first-stage cylinder body is further provided with a guide sleeve III, a guide ring and a dust ring.

Further, valve piece left side upper portion still is equipped with the inlet and returns the liquid mouth, and the feed liquor hole leads to liquid hole UNICOM with the valve piece is inside, returns liquid mouth and the inside liquid chamber UNICOM that returns of valve piece, and valve piece top still is equipped with check valve and counter valve.

Furthermore, the two ends of the first-level sleeve are provided with guide rings, and the right side of the first-level sleeve is provided with an installation lug plate.

Furthermore, exhaust holes are formed in the first-stage cylinder body, the second-stage sleeve and the first-stage sleeve, and an exhaust plug is further arranged on the exhaust hole of the first-stage sleeve.

The utility model has the advantages that: the utility model provides a problem of feed liquor structure in thin steel pipe can't realize, and realized the annular and supply the liquid function, and with the support cylinder design for interior feed liquor two extending structure, on transferring the pressure indirect that the piston rod bore to one-level cylinder body and second grade cylinder body, ensured the life of piston rod, and one-level cylinder body and second grade cylinder body if take place bending deformation also be convenient for change in the use, improved the factor of safety and the life of hydro-cylinder greatly.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the secondary cylinder.

Fig. 3 is a schematic view of the structure of the piston rod.

Fig. 4 is a schematic structural view of a primary bushing.

Fig. 5 is a schematic diagram of the operation of the support cylinder.

1. A primary sleeve; 101. a flange sleeve; 102. an ear plate; 2. a piston rod; 3. a piston; 4. a secondary cylinder body; 401. an outer cylinder barrel; 402. an inner sleeve; 403. a cylinder bottom; 404. an annular piston; 5. a secondary sleeve; 6. a guide sleeve II; 7. a guide sleeve I; 8. a primary cylinder body; 9. a platen; 10. a guide sleeve III; 11. a valve block; 1101. a liquid inlet; 1102. a liquid return port; 1103. a one-way valve; 1104. a counterbalance valve; 12. and (6) a liquid flowing pipe.

Detailed Description

As shown in the figure, the mining four-arm bolting machine supporting oil cylinder comprises a primary sleeve 1 and a piston rod 2 arranged at the center of the left end of the primary sleeve 1, wherein the piston rod 2 comprises a valve block 11 positioned at the left end of the piston rod 2 and a liquid through pipe 12 positioned inside the piston rod 2, the piston rod 2 is fixedly connected with the valve block 11, the piston rod 2 is a hollow pipe, and is connected with a liquid return cavity of the valve block 11 through an inner cavity of the piston rod and a liquid through hole drilled in the piston rod 2, the liquid through pipe 12 is connected with a liquid through hole in the valve block 11, the left end of the primary sleeve 1 is connected with the valve block 11 through a flange sleeve 101 and a bolt, the upper part of the left side of the valve block 11 is further provided with a liquid inlet 1101 and a liquid return port 1102, the liquid inlet 1101 is communicated with the liquid through hole in the valve block 11, the liquid return port 1102 is communicated with the liquid return cavity in the valve block 11; a piston 3 is arranged at the right end of a piston rod 2, a secondary cylinder body 4 is connected to the inner side of the right end of the primary sleeve 2 through a guide sleeve II 6, a secondary sleeve 5 is sleeved on the outer side of the secondary cylinder body 4, a flange sleeve is also arranged at the left end of the secondary sleeve 5, an external thread is arranged at the tail of the flange sleeve, and a guide sleeve III 10, a guide ring and a dust ring are further arranged at the joint of the outer side of the right end of the secondary sleeve 5 and the primary cylinder; the piston 3 extends into the left end of the secondary cylinder body 4, a guide sleeve I is arranged on the outer side of the right end of the secondary cylinder body 4, the secondary cylinder body is connected with the primary cylinder body through the guide sleeve I, the rightmost end of the secondary cylinder body 4 extends into the primary cylinder body 8, the rightmost end of the primary cylinder body 8 is connected with a pressure plate 9 through a bolt, and the outer diameter of the secondary sleeve 5 is smaller than the inner diameter of the primary sleeve 2 and larger than the outer diameter of the primary cylinder body 8; further, the secondary cylinder 4 comprises an outer cylinder 401, an inner sleeve 402 and a cylinder bottom 403, the outer cylinder 401, the inner sleeve 402 and the cylinder bottom 403 are fixedly welded, an annular piston 404 is arranged at the position, located at the guide sleeve I7, of the outer cylinder 401, a circle of liquid through holes along the circumference of the outer cylinder 401 are formed in the annular piston 404 of the outer cylinder 401, and liquid through holes corresponding to the inner sleeve 402 are also formed in the corresponding position of the inner sleeve 402; the outer surface of the primary cylinder body 8 is plated with chrome, a guide ring is assembled on the excircle of the cylinder opening, a threaded hole is formed in the tail of the primary cylinder body 8, and the pressure plate 9 is fixedly connected with the tail of the cylinder body through a bolt; two ends of the primary sleeve 2 are provided with guide rings, and the outer part of the right side of the primary sleeve 2 is also provided with a mounting lug plate 102 which is convenient for being connected with an equipment rack; exhaust holes are formed in the first-stage cylinder body 8, the second-stage sleeve 5 and the first-stage sleeve 2, and an exhaust plug is further arranged on the exhaust hole of the first-stage sleeve 2.

When the liquid inlet device is used specifically, the liquid inlet action sequence of the support oil cylinder is as follows: firstly, feeding liquid from a liquid inlet, extending out a secondary cylinder body, enabling a pressure plate to be in contact with a bottom plate, and jacking an operating platform by matching with the action of a front inclined strut oil cylinder until the maximum stroke (2700 mm) is reached, wherein liquid in a rodless cavity flows to a liquid return port of a valve block through inner cavities of a primary cylinder body and a secondary cylinder body; the liquid return action sequence of the support oil cylinder is as follows: the liquid returning port feeds liquid, and the liquid flows in through the inner liquid inlet cavity to withdraw the primary cylinder body and the secondary cylinder body in sequence; liquid in the rodless cavity flows to the liquid inlet along the liquid through pipe.

Claims

1. The utility model provides a mining four-arm bolter support cylinder which characterized in that: including the one-level sleeve pipe, set up in the piston rod that one-level sleeve pipe left end central point put, the piston rod right-hand member is equipped with the piston, one-level sleeve pipe right-hand member inboard is connected with the second grade cylinder body through uide bushing II, and the cover is equipped with the second grade sleeve pipe outside the second grade cylinder body, the piston stretches into the setting of second grade cylinder body left end, the second grade cylinder body right-hand member outside is equipped with uide bushing I, the second grade cylinder body passes through uide bushing I and is connected with the one-level cylinder body, and the second grade cylinder body right-hand member stretches into the setting of one-level cylinder body, there.

2. The mining four-arm bolting machine support cylinder according to claim 1, characterized in that: the piston rod is including the valve block that is located piston rod left end portion and the liquid pipe that leads to that is located the piston rod inside, piston rod and valve block fixed connection, lead to the liquid pipe and be connected with the inside liquid hole that leads to of valve block, one-level sleeve pipe left end is passed through flange cover and bolt and is connected with the valve block.

3. The mining four-arm bolting machine support cylinder according to claim 2, characterized in that: the two-stage cylinder body comprises an outer cylinder barrel, an inner sleeve barrel and a cylinder bottom, the outer cylinder barrel, the inner sleeve barrel and the cylinder bottom are fixedly welded, an annular piston is arranged at the position, located at the guide sleeve I, of the outer cylinder barrel, a circle of liquid through holes are formed in the annular piston of the outer cylinder barrel along the circumference of the outer cylinder barrel, and liquid through holes corresponding to the inner sleeve barrel are also formed in the corresponding position of the inner sleeve barrel.

4. The mining four-arm bolting machine support cylinder according to claim 3, characterized in that: the outer surface of the first-stage cylinder body is plated with chrome, a guide ring is assembled on the excircle of the cylinder opening, a threaded hole is formed in the tail of the first-stage cylinder body, and the pressure plate is fixedly connected with the tail of the cylinder body through a bolt.

5. The mining four-arm bolting machine support cylinder according to claim 4, characterized in that: the left end of the second-stage sleeve is provided with a flange sleeve, the tail of the second-stage sleeve is provided with an external thread, and the joint of the outer side of the right end of the second-stage sleeve and the first-stage cylinder body is further provided with a guide sleeve III, a guide ring and a dust ring.

6. The mining four-arm bolting machine support cylinder according to claim 5, characterized in that: valve piece left side upper portion still is equipped with inlet and returns the liquid mouth, and the feed liquor hole leads to liquid hole UNICOM with the valve piece is inside, returns liquid mouth and the inside liquid chamber UNICOM that returns of valve piece, and valve piece top still is equipped with check valve and counter valve.

7. The mining four-arm bolting machine support cylinder according to claim 6, characterized in that: the one-level sleeve pipe both ends all are equipped with the guide ring, and one-level sleeve pipe right side outside still is equipped with the installation otic placode.

8. The mining four-arm bolting machine support cylinder according to claim 7, characterized in that: exhaust holes are formed in the first-stage cylinder body, the second-stage sleeve and the first-stage sleeve, and an exhaust plug is further arranged on the exhaust hole of the first-stage sleeve.