CN203321547U

CN203321547U - Hydraulic prop double liquid injection system

Info

Publication number: CN203321547U
Application number: CN2013202959752U
Authority: CN
Inventors: 武文成
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-27
Filing date: 2013-05-27
Publication date: 2013-12-04
Anticipated expiration: 2023-05-27

Abstract

The utility model discloses a hydraulic prop double liquid injection system. The hydraulic prop double liquid injection system comprises a prop-pulling channel (9), a prop-pulling three-way valve (10), a prop-pulling three-way base (11) and a remote injection system; a prop-lifting channel (6) is arranged in the internal thick-wall channel of an oil cylinder (7), the upper portion of the prop-pulling three-way valve base (11) is slidingly sealed with a second middle cylinder (3), and the lower portion of the prop-pulling three-way valve base (11) is connected with the oil cylinder (7); the prop-pulling three-way valve (10) is assembled in the prop-pulling three-way valve base (11), the prop pulling channel (9) is arranged in the channel between the outer wall of the second middle cylinder (3) and the inner wall of the oil cylinder (7) and is communicated with the end face of a piston (8); the remote injection system comprises a three-way valve (12), a high-pressure rubber hose (13), a liquid injection nozzle (14) and an unloading device (15); the prop pulling channel can be arranged to enable the middle cylinders of the two-level or multi-level props to be completely reset, the problems that carrying is difficult to conduct and the surface of the middle cylinder is prone to colliding due to incomplete prop-pulling is effectively solved, and the service life of a hydraulic prop is guaranteed.

Description

The two liquid injection systems of hydraulic prop

Technical field

The utility model relates to a kind of mining supports equipment, specifically the two liquid injection systems of a kind of hydraulic prop.

Background technology

Hydraulic prop is one of main support apparatus of mining industry, mainly at underworkings support, coal-face, supports.At present hydraulic prop mainly by the post of living, in the assemblies such as cylinder, back-moving spring, triple-use valve and oil cylinder form, by triple-use valve, oil cylinder is carried out to the fluid injection supporting during work, cylinder in oil cylinder jack-up, middle cylinder drives the post of living and carries out work, first returns post alive during unloading and returns middle cylinder again; While resetting, mainly by back-moving spring, resetted, the reseting sequence of pillar is: the post of first living resets, then middle cylinder resets.But, for two-stage or multistage pillar, while resetting, back-moving spring generally can not make middle cylinder reset fully, having 100mm-150mm stretches out outside hydraulic prop, the middle cylinder extended was out of shape in easy stressed causing of carrying, and exposed middle cylinder surfaces is also easily damaged, and affects the working life of hydraulic prop.

Summary of the invention

The problem existed for above-mentioned prior art, the utility model provides a kind of hydraulic prop two liquid injection systems, can make the middle cylinder of multistage pillar reset fully, guarantees the application life of hydraulic prop.

To achieve these goals, the utility model adopts the two liquid injection systems of a kind of hydraulic prop, comprises the piston of post alive, middle cylinder one, middle cylinder two, setting prop triple-use valve seat, setting prop triple-use valve, setting prop passage, oil cylinder and middle cylinder two; The column sleeve of living is contained in middle cylinder one, and middle cylinder one is enclosed within middle cylinder two, and middle cylinder two is sleeved in cylinder cavity; Setting prop triple-use valve seat lower end is connected with oil cylinder by steel wire, upper end and two slipper seals of middle cylinder, and the setting prop triple-use valve is assemblied on setting prop triple-use valve seat; Also comprise prop drawing passage, prop drawing triple-use valve, prop drawing triple-use valve seat and long-range liquid injection system; Described setting prop channel setting in the passage of the inside of oil cylinder wall thickness, prop drawing triple-use valve seat top and two slipper seals of middle cylinder, bottom connects oil cylinder; The prop drawing triple-use valve is assemblied in prop drawing triple-use valve seat, the end face of prop drawing channel setting piston of cylinder two in the passage between middle cylinder two outer walls and oil cylinder inner wall and in being communicated with; Described long-range liquid injection system comprises three way cock, high-pressure rubber pipe, liquid injecting mouth and discharge mechanism, three way cock connects respectively liquid injecting mouth and discharge mechanism by two high-pressure rubber pipes, liquid injecting mouth docking setting prop triple-use valve fluid injection end discharge mechanism docking simultaneously prop drawing triple-use valve unloading end or liquid injecting mouth docking prop drawing triple-use valve fluid injection end, discharge mechanism docking setting prop triple-use valve unloading end.

Prop drawing triple-use valve seat sets high in setting prop triple-use valve seat and puts.

With existing hydraulic prop, compare, the utility model has been set up prop drawing triple-use valve and prop drawing passage, during fluid injection, by liquid injecting mouth to the fluid injection of setting prop passage, by discharge mechanism, the prop drawing passage is unloaded simultaneously, during prop drawing, liquid injecting mouth by the prop drawing triple-use valve to carrying out fluid injection in the prop drawing passage, discharge mechanism enters the piston end surface of middle cylinder two to setting prop triple-use valve unloading end to the hydraulic oil in the setting prop passage simultaneously, middle cylinder two is resetted, along with hydraulic oil ceaselessly enters, the pressure of hydraulic oil can make middle cylinder two reset fully, efficiently solve the problem that not exclusively causes difficult and middle cylinder surfaces easily to damage because of prop drawing, guarantee the application life of hydraulic prop.

The accompanying drawing explanation

Fig. 1 is the utility model structural front view;

Fig. 2 is long-range liquid injection system schematic diagram of the present utility model;

Fig. 3 is the local enlarged diagram of I in Fig. 1;

In figure: 1, the post of living, 2, middle cylinder one, 3, middle cylinder two, 4, setting prop triple-use valve seat, 5, the setting prop triple-use valve, 6, the setting prop passage, 7, oil cylinder, 8, the piston of middle cylinder two, 9, the prop drawing passage, 10, prop drawing triple-use valve, 11, prop drawing triple-use valve seat, 12, three way cock, 13, high-pressure rubber pipe, 14, liquid injecting mouth, 15, discharge mechanism.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, Figure 2 and Figure 3, the two liquid injection systems of a kind of hydraulic prop of the utility model, comprise the piston 8 of post 1 alive, middle cylinder 1, middle cylinder 23, setting prop triple-use valve seat 4, setting prop triple-use valve 5, setting prop passage 6, oil cylinder 7 and middle cylinder two; The post 1 of living is sleeved in middle cylinder 1, and middle cylinder 1 is enclosed within middle cylinder 23, and middle cylinder 23 is sleeved in oil cylinder 7 inner chambers; Setting prop triple-use valve seat 4 lower ends are connected with oil cylinder 7 by steel wire, upper end and 23 slipper seals of middle cylinder, and setting prop triple-use valve 4 is assemblied on setting prop triple-use valve seat 5, also comprises prop drawing passage 9, prop drawing triple-use valve 10, prop drawing triple-use valve seat 11 and long-range liquid injection system; Setting prop passage 6 is arranged in the passage of inside of oil cylinder 7 wall thickness, prop drawing triple-use valve seat 11 tops and 23 slipper seals of middle cylinder, and bottom connects oil cylinder 7; Prop drawing triple-use valve 10 is assemblied in 11 li of prop drawing triple-use valve seats, and prop drawing passage 9 is arranged in the passage between middle cylinder 23 outer walls and oil cylinder 7 inwalls and the end face of the piston 8 of cylinder two in being communicated with; Described long-range liquid injection system comprises three way cock 12, high-pressure rubber pipe 13, liquid injecting mouth 14 and discharge mechanism 15, three way cock 12 connects respectively liquid injecting mouth 14 and discharge mechanism 15 by two high-pressure rubber pipes 13, liquid injecting mouth 14 docking setting prop triple-use valve 5 fluid injection ends are discharge mechanism 15 docking prop drawing triple-use valve 10 unloading ends or liquid injecting mouth 14 docking prop drawing triple-use valve 10 fluid injection ends simultaneously, discharge mechanism 15 docking setting prop triple-use valve 5 unloading ends.

Further, prop drawing triple-use valve seat 11 positions, higher than setting prop triple-use valve seat 4 positions, produce larger pressure in the time of can making the prop drawing fluid injection.

Hydraulic prop is when setting prop, the fluid injection end of liquid injecting mouth 14 docking setting prop triple-use valves 5, discharge mechanism 15 docks the unloading end of prop drawing triple-use valves 10 simultaneously, hydraulic oil injects setting prop passage 6 by liquid injecting mouth 14 through setting prop triple-use valve 5, enter middle cylinder 23 bottoms, live post 1, middle cylinder 1 and middle cylinder 23 stretch out successively until rise to the height met the demands.

Hydraulic prop is when prop drawing, and liquid injecting mouth 14 docks the fluid injection end of prop drawing triple-use valves 10, the unloading end of discharge mechanism 15 docking setting prop triple-use valves 5; Hydraulic oil is injected in prop drawing passage 9 through prop drawing triple-use valve 10 by liquid injecting mouth 13, piston 8 end faces of centralizing cylinder two are exerted pressure, and middle cylinder 23 are resetted, along with the continuous injection of hydraulic oil, piston 8 end faces of centralizing cylinder two are exerted pressure, until middle cylinder 23 resets fully.

In sum, the utility model has been set up prop drawing triple-use valve 10 and prop drawing passage 9, during fluid injection, by 14 pairs of setting prop passage 6 fluid injections of liquid injecting mouth, simultaneously by 15 pairs of prop drawing path 10 unloadings of discharge mechanism, during prop drawing, liquid injecting mouth 14 is by carrying out fluid injection in 10 pairs of prop drawing passages 9 of prop drawing triple-use valve, 15 pairs of setting prop triple-use valves of discharge mechanism, 5 unloading ends enter the piston end surface of middle cylinder 23 to the hydraulic oil in setting prop passage 6 simultaneously, middle cylinder 23 is resetted, along with hydraulic oil ceaselessly enters, the pressure of hydraulic oil can make middle cylinder 23 reset fully, efficiently solve the problem that not exclusively causes difficult and middle cylinder surfaces easily to damage because of prop drawing, guarantee the application life of hydraulic prop.

Use another advantage of long-range liquid injection system to be, when need to be to dangerous work plane prop drawing, the workman only need be arranged on respectively the fluid injection end of prop drawing triple-use valve 10 and the unloading end of setting prop triple-use valve 5 to liquid injecting mouth 14 and discharge mechanism 15, get final product the long-range leg restoration that makes, determine whether again to need withdrawing prop according to field condition, thereby can effectively avoid the generation of the personnel casualty accidents that causes because of prop drawing.

Claims

1. two liquid injection systems of a hydraulic prop, comprise the piston (8) of post alive (1), middle cylinder one (2), middle cylinder two (3), setting prop triple-use valve seat (4), setting prop triple-use valve (5), setting prop passage (6), oil cylinder (7) and middle cylinder two; The post (1) of living is sleeved in middle cylinder one (2), and middle cylinder one (2) is enclosed within middle cylinder two (3), and middle cylinder two (3) is sleeved in oil cylinder (7) inner chamber; Setting prop triple-use valve seat (4) lower end is connected with oil cylinder (7) by steel wire, upper end and two (3) slipper seals of middle cylinder, setting prop triple-use valve (4) is assemblied on setting prop triple-use valve seat (5), it is characterized in that, also comprise prop drawing passage (9), prop drawing triple-use valve (10), prop drawing triple-use valve seat (11) and long-range liquid injection system; Described setting prop passage (6) is arranged in the passage of inside of oil cylinder (7) wall thickness, prop drawing triple-use valve seat (11) top and two (3) slipper seals of middle cylinder, and bottom connects oil cylinder (7); It is inner that prop drawing triple-use valve (10) is assemblied in prop drawing triple-use valve seat (11), and prop drawing passage (9) is arranged in the passage between middle cylinder two (3) outer walls and oil cylinder (7) inwall and the end face of the piston (8) of cylinder two in being communicated with; Described long-range liquid injection system comprises three way cock (12), high-pressure rubber pipe (13), liquid injecting mouth (14) and discharge mechanism (15), three way cock (12) connects respectively liquid injecting mouth (14) and discharge mechanism (15) by two high-pressure rubber pipes (13), liquid injecting mouth (14) docking setting prop triple-use valve (5) the fluid injection end end of discharge mechanism (15) docking prop drawing triple-use valve (10) unloading simultaneously or liquid injecting mouth (14) docking prop drawing triple-use valve (10) fluid injection end, discharge mechanism (15) docking setting prop triple-use valve (5) unloading end.

2. the two liquid injection systems of a kind of hydraulic prop according to claim 1, is characterized in that, described prop drawing triple-use valve seat (11) position is higher than setting prop triple-use valve seat (4) position.