CN110173479A - A kind of drilling machine consolidates sliding rail oil cylinder, oil piping system and pillar with big column - Google Patents

A kind of drilling machine consolidates sliding rail oil cylinder, oil piping system and pillar with big column Download PDF

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Publication number
CN110173479A
CN110173479A CN201910354604.9A CN201910354604A CN110173479A CN 110173479 A CN110173479 A CN 110173479A CN 201910354604 A CN201910354604 A CN 201910354604A CN 110173479 A CN110173479 A CN 110173479A
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CN
China
Prior art keywords
oil cylinder
firm
cylinder
oil
switching
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Granted
Application number
CN201910354604.9A
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Chinese (zh)
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CN110173479B (en
Inventor
姚亚峰
汪芸
梁春苗
张刚
宋海涛
韩健
晏显炜
沙翠翠
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Xian Research Institute Co Ltd of CCTEG
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Xian Research Institute Co Ltd of CCTEG
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Priority to CN201910354604.9A priority Critical patent/CN110173479B/en
Publication of CN110173479A publication Critical patent/CN110173479A/en
Application granted granted Critical
Publication of CN110173479B publication Critical patent/CN110173479B/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1404Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1409Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423Component parts; Constructional details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149Fluid interconnections, e.g. fluid connectors, passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08Characterised by the construction of the motor unit
    • F15B15/14Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20Other details, e.g. assembly with regulating devices

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  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention provides a kind of big columns of drilling machine to consolidate sliding rail oil cylinder, oil piping system and pillar, including the first axially disposed firm oil cylinder, chovr body and the second firm oil cylinder;Level-one cylinder body more than second firm oil cylinder oil cylinder at least more firm than first, and at least one oil communication chovr body of the second firm oil cylinder is arranged on the first firm oil cylinder.Cylinder structure, oil piping system or pillar construction provided by the invention, pass through the first firm oil cylinder, the structural integrity of chovr body and the second firm oil cylinder, oil duct is all provided with inside oil cylinder except disengaging oilhole, the oilhole of one oil circuit of the firm oil cylinder of multistage is provided with the top of itself cylinder body, another oilhole of the firm oil cylinder of multistage is arranged in level-one and consolidates on the cylinder body of oil cylinder, make sliding rail stroke long enough, the cylinder body of two oil cylinders can be used as whole sliding rail support work package and slide on it, expand the open area of drilling machine.

Description

A kind of drilling machine consolidates sliding rail oil cylinder, oil piping system and pillar with big column
Technical field
The invention belongs to drilling equipment technical fields, are related to a kind of drilling machine big column firm sliding rail oil cylinder, oil piping system And pillar.
Background technique
Coal mine crawler type all-hydraulic tunnel drilling rig, when it carries out construction drill, it usually needs hydraulic cylinder comes up and down Its crawler belt car body and host are consolidated, external force when drilling machine gravity and work is born.Since coal mine down-hole tunnel size is limited, in portion Divide under mine, heading sizes height is within 2m.Currently, be on the second firm oil cylinder adjunction extension bar top to upper plate. Due to two-stage hydraulic cylinder because its is compact-sized, stroke longer than single stage oil cylinder can be achieved in given installation space, from And it is widely used in the case where installation space anxiety;At least one hydraulic fluid port in existing two-level oil cylinder's oil feeding line On the piston rod, hydraulic fluid port setting is on the piston rod since piston is movement rod piece, it will the sebific duct movement for driving connection hydraulic fluid port is held Easily sebific duct is allowed to be worn, even drag and pull oil leak, and sebific duct length increases very much, arrangement inconvenience.
In existing invention the second firm oil cylinder be usually on the piston rod face adjunction extension bar top to upper plate.Oil cylinder into Oil outlet concentrates design generally by design external oil pipe, focuses on external oil clot and designs two hydraulic fluid ports;Secondary cylinder is wherein One hydraulic fluid port is usually to design on the piston rod.It is with piston rod movement that hydraulic fluid port is caused in cylinder efficient.
Existing second firm oil cylinder stroke falls short of, and one can not reach top, need face adjunction extension bar on the piston rod, Handling are inconvenient, not solid and reliable enough;Existing second firm oil cylinder port designs the invention on cylinder body, and cylinder barrel outer wall is set Oil pipe is counted, sliding rail stroke is shorter when cylinder body cannot be integrally used as to sliding rail carrying work package or being used as sliding rail;It will The oil cylinder of hydraulic fluid port design on the piston rod can be used as sliding rail carrying work package, but piston rod is movement parts, will drive hydraulic fluid port Oil pipe take exercises, oil pipe will receive abrasion, drag and pull oil leak, and the length of oil pipe to reach piston rod stretching extreme position Length, when piston rod is withdrawn completely, oil pipe pipeline arrangement is inconvenient.
Summary of the invention
The present invention provides a kind of big column of drilling machine and consolidates sliding rail oil cylinder, oil piping system and pillar, increase sliding rail oil cylinder Sliding rail stroke and propulsion stroke solve the problems, such as that hydraulic fluid port setting hinders sliding rail stroke.
Defer to the first scheme of the invention, a kind of drilling machine firm sliding rail oil cylinder of big column, including axially disposed First firm oil cylinder, chovr body and the second firm oil cylinder;Level-one cylinder body more than second firm oil cylinder oil cylinder at least more firm than first, and At least one oil communication chovr body of second firm oil cylinder is arranged on the first firm oil cylinder.
Optionally, the chovr body includes the switching seal set gradually along axial direction and switching connected component, is transferred close The first firm oil cylinder of body one end sealing is sealed, the switching seal other end and switching connected component form level-one switching chamber;
Connected component of transferring is connected to level-one switching chamber and the second firm oil cylinder.
Optionally, the first firm oil cylinder includes the first firm cylinder block and the first firm oil cylinder piston, the The firm oil cylinder first of first be sequentially communicated is buried on one firm oil cylinder body wall stretches out hydraulic fluid port, the first firm oil cylinder stretching oil circuit Hydraulic fluid port is stretched out with the first firm oil cylinder second, controls the stretching of the first firm oil cylinder piston;First firm oil cylinder withdraws hydraulic fluid port control Make the withdrawal of the first firm oil cylinder piston;
The firm oil cylinder of described second includes two-stage oil cylinder, and in the second level, the piston head of oil cylinder is connected to chovr body and second surely Gu the two-stage cylinder of oil cylinder.
Optionally, the second firm oil cylinder is two-stage oil cylinder, the stretching oil communication chovr body of the second firm oil cylinder It is arranged on the first firm oil cylinder, the withdrawal oil circuit of the second firm oil cylinder is arranged in the second firm oil cylinder;
The end of the first firm oil cylinder is arranged in the hydraulic fluid port for stretching out oil circuit;The hydraulic fluid port setting of oil circuit is withdrawn in the second firm oil The end of cylinder.
Optionally, the chovr body includes the switching seal set gradually along axial direction and switching connected component, is transferred close The first firm oil cylinder of body one end sealing is sealed, the switching seal other end and switching connected component form level-one switching chamber;
The first switching of setting oil circuit on switching connected component, the first switching oil communication level-one switching chamber and second consolidate oil Cylinder;
The stretching oil circuit of second firm oil cylinder includes setting is sequentially communicated on the first firm oil cylinder body wall second steady Gu oil cylinder first stretches out hydraulic fluid port, the second firm oil cylinder stretches out oil circuit and the second firm oil cylinder second stretches out hydraulic fluid port, the second firm oil The second level cylinder body that cylinder second stretches out hydraulic fluid port, level-one switching chamber, the first switching oil circuit and the second firm oil cylinder is sequentially communicated;
The withdrawal oil circuit of second firm oil cylinder includes the second firm oil cylinder being arranged on the second firm oil cylinder body wall One withdraws hydraulic fluid port, and second be arranged on the second firm oil cylinder level-one cylinder wall or the second firm oil cylinder second piston rod wall is firm Oil cylinder second withdraws hydraulic fluid port, the second firm oil cylinder withdraws oil circuit and the second firm oil cylinder third withdraws hydraulic fluid port.
Optionally, the withdrawal oil communication chovr body of the second firm oil cylinder is arranged on the first firm oil cylinder, the The stretching oil circuit of two firm oil cylinders is arranged in the second firm oil cylinder;
The end of the first firm oil cylinder is arranged in the hydraulic fluid port for withdrawing oil circuit;The hydraulic fluid port setting of oil circuit is stretched out in the second firm oil The end of cylinder.
Optionally, the chovr body includes the switching seal set gradually along axial direction and switching connected component, is transferred close The first firm oil cylinder of body one end sealing is sealed, the switching seal other end and switching connected component form level-one switching chamber;
The second switching oil circuit, axially disposed first switching oil circuit and third switching oil are disposed radially on switching connected component Road, the first switching oil circuit and the second switching oil communication;The contact jaw of switching connected component and the second firm oil cylinder forms second level and turns Chamber is connect, piston head is set on the second firm oil cylinder second piston head and passes hydraulic fluid port;
The withdrawal oil circuit of second firm oil cylinder includes the second firm oil cylinder being arranged on the first firm oil cylinder body wall One withdrawal hydraulic fluid port is withdrawn with the second firm oil cylinder on the first firm cylinder block and the second firm oil cylinder second level cylinder wall is crossed on Oil circuit, the second firm oil cylinder withdraws oil circuit and third switching oil circuit, the second firm oil cylinder second withdraw hydraulic fluid port and the second firm oil Cylinder third withdraws hydraulic fluid port connection;
The stretching oil circuit of the firm oil cylinder of described second includes be arranged on the second firm oil cylinder second level cylinder wall second Firm oil cylinder first stretches out hydraulic fluid port and the second firm oil cylinder stretches out oil circuit, and the second firm stretching of oil cylinder first hydraulic fluid port, second consolidate Oil cylinder stretches out oil circuit, the first switching oil circuit, the second switching oil circuit, second level switching chamber, the second firm oil cylinder second level cylinder body and piston Head passes hydraulic fluid port connection.
Defer to second scheme of the invention, a kind of drilling machine firm sliding rail cylinder oil system of big column, including this hair The big column of the bright drilling machine consolidates sliding rail oil cylinder, and the stretching oil communication chovr body of the second firm oil cylinder is arranged first On firm oil cylinder;
The chovr body includes the switching seal set gradually along axial direction and switching connected component, seal one end of transferring The first firm oil cylinder is sealed, the switching seal other end and switching connected component form level-one switching chamber;
The first switching of setting oil circuit on switching connected component, the first switching oil communication level-one switching chamber and second consolidate oil Cylinder;
The stretching oil circuit of second firm oil cylinder includes setting is sequentially communicated on the first firm oil cylinder body wall second steady Gu oil cylinder first stretches out hydraulic fluid port, the second firm oil cylinder stretches out oil circuit and the second firm oil cylinder second stretches out hydraulic fluid port, the second firm oil The second level cylinder body that cylinder second stretches out hydraulic fluid port, level-one switching chamber, the first switching oil circuit and the second firm oil cylinder is sequentially communicated;
The withdrawal oil circuit of second firm oil cylinder includes the second firm oil cylinder being arranged on the second firm oil cylinder body wall One withdraws hydraulic fluid port, and second be arranged on the second firm oil cylinder level-one cylinder wall or the second firm oil cylinder second piston rod wall is firm Oil cylinder second withdraws hydraulic fluid port, the second firm oil cylinder withdraws oil circuit and the second firm oil cylinder third withdraws hydraulic fluid port.
Second scheme of the invention is deferred to, it is also possible that a kind of big column of drilling machine consolidates sliding rail cylinder oil system, packet It includes the big column of drilling machine of the present invention and consolidates sliding rail oil cylinder, and the withdrawal oil communication chovr body setting of the second firm oil cylinder On the first firm oil cylinder;
The chovr body includes the switching seal set gradually along axial direction and switching connected component, seal one end of transferring The first firm oil cylinder is sealed, the switching seal other end and switching connected component form level-one switching chamber;
The second switching oil circuit, axially disposed first switching oil circuit and third switching oil are disposed radially on switching connected component Road, the first switching oil circuit and the second switching oil communication;The contact jaw of switching connected component and the second firm oil cylinder forms second level and turns Chamber is connect, piston head is set on the second firm oil cylinder second piston head and passes hydraulic fluid port;
The withdrawal oil circuit of second firm oil cylinder includes the second firm oil cylinder being arranged on the first firm oil cylinder body wall One withdrawal hydraulic fluid port is withdrawn with the second firm oil cylinder on the first firm cylinder block and the second firm oil cylinder second level cylinder wall is crossed on Oil circuit, the second firm oil cylinder withdraws oil circuit and third switching oil circuit, the second firm oil cylinder second withdraw hydraulic fluid port and the second firm oil Cylinder third withdraws hydraulic fluid port connection;
The stretching oil circuit of the firm oil cylinder of described second includes be arranged on the second firm oil cylinder second level cylinder wall second Firm oil cylinder first stretches out hydraulic fluid port and the second firm oil cylinder stretches out oil circuit, and the second firm stretching of oil cylinder first hydraulic fluid port, second consolidate Oil cylinder stretches out oil circuit, the first switching oil circuit, the second switching oil circuit, second level switching chamber, the second firm oil cylinder second level cylinder body and piston Head passes hydraulic fluid port connection.
Defer to the third scheme of the invention, it is steady with big column that drilling machine of the present invention is arranged in pillar in a kind of pillar Sliding rail cylinder oil system is consolidated with big column Gu drilling machine of the present invention is arranged in sliding rail oil cylinder or pillar.
Beneficial effects of the present invention:
Cylinder structure, oil piping system or pillar construction provided by the invention pass through the first firm oil cylinder, chovr body and second The structural integrity of firm oil cylinder, oil duct are all provided with inside oil cylinder except disengaging oilhole, an oil circuit of the firm oil cylinder of multistage Oilhole is provided with the top of itself cylinder body, and the cylinder body that level-one consolidates oil cylinder is arranged in another oilhole of the firm oil cylinder of multistage On, make sliding rail stroke long enough, the cylinder body of two oil cylinders can be used as whole sliding rail support work package and slide on it, expand brill The open area of machine.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the first drilling machine of the invention firm sliding rail oil cylinder of big column and oil piping system structure chart;
Fig. 2 is second of drilling machine of the invention firm sliding rail oil cylinder of big column and oil piping system structure chart;
Fig. 3 is the right side view of the first firm oil cylinder of the invention;
1- first consolidates oil cylinder, 2- chovr body, 3- second and consolidates oil cylinder;
11- first consolidates cylinder block, 111 (331 ')-the second firm oil cylinders first stretch out hydraulic fluid port, 112 (332)-the second It is firm that firm oil cylinder stretches out oil circuit, 113- second consolidates the stretching of oil cylinder second hydraulic fluid port, 12- first consolidates oil cylinder piston, 13- first Oil cylinder first stretches out hydraulic fluid port, 14- first consolidates oil cylinder stretching oil circuit, 15- first consolidates oil cylinder second and stretches out hydraulic fluid port, 16- first Firm oil cylinder withdraws hydraulic fluid port;
21- transfer oil circuit, the 222- second of seal, 22- switching connected component, 221- first that transfer transfers oil circuit, 223- the Three switching oil circuits, 23- level-one switching chamber, 24- second level switching chamber;
31- second consolidates oil cylinder first stage piston bar, 32- second consolidates (the second firm oil cylinder second level work of oil cylinder level-one cylinder body Stopper rod), 321 (113 ')-the second firm oil cylinders second withdraw hydraulic fluid ports, 322 (112 ')-the second firm oil cylinders withdraw oil circuits, 323 (324)-the second firm oil cylinder thirds withdraw hydraulic fluid port, 33- second consolidates oil cylinder second level cylinder body, 331 (111 ')-the second firm oil cylinders First withdrawal hydraulic fluid port, 34- second consolidate oil cylinder second piston head, 341- piston head passes hydraulic fluid port;
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " is typically referred to corresponding It is defined on the basis of the drawing of attached drawing, " inside and outside " refers to the inner and outer of corresponding component profile." forward and backward " is referred to along coal seam drilling Hole by aperture to bottom hole front and back.
The invention mainly comprises the big columns of drilling machine to consolidate sliding rail oil cylinder, oil piping system and column.
It includes axially disposed first firm that the big column of drilling machine of the invention, which consolidates sliding rail oil cylinder, combined with Figure 1 and Figure 2, Oil cylinder 1, chovr body 2 and the second firm oil cylinder 3;Second firm oil cylinder 3 level-one cylinder body at least more than 1 than the first firm oil cylinder, and the At least one oil communication chovr body 2 of two firm oil cylinders 3 is arranged on the first firm oil cylinder 1.By the first firm oil cylinder 1, One of oil circuit setting of the structural integrity of chovr body 2 and the second firm oil cylinder 3, the firm oil cylinder of multistage consolidates oil cylinder in few grade On, multi-stage oil cylinder guarantees that sliding rail stroke is sufficiently long simultaneously, and hydraulic fluid port is arranged in being provided separately to reduce of oil circuit on multi-stage oil cylinder A possibility that, it is further ensured that on oil cylinder outer wall do not have the transportable obstacle of sliding rail, the cylinder body of two oil cylinders can be used as whole Body sliding rail support work package slides on it, expands the open area of drilling machine.Big column of the invention consolidates sliding rail oil cylinder packet The second firm oil cylinder 3 and the first firm oil cylinder 1 are included, a kind of structure type that oil cylinder is coaxial docking up and down is provided, as shown in Figure 1, Stroke needed for first firm oil cylinder 1 is short, provides a kind of oil channel structure form of single stage oil cylinder.First firm oil cylinder 1 mainly by First firm oil cylinder piston 12 and the first firm cylinder block 11 are constituted;Stroke needed for second firm oil cylinder 3 is long, provides one kind two The oil channel structure form of grade oil cylinder.Second firm oil cylinder 3 is mainly by the firm oil of the second firm oil cylinder first stage piston bar 31, second Cylinder level-one cylinder body (the second firm oil cylinder second piston rod) 32 and the second firm oil cylinder second level cylinder body 33 are constituted.First firm oil cylinder 1 the chovr body 2 of transition is nested welds together with the second firm 3 medium design of oil cylinder, after three keeps same axis welding Heat treatment process, cylinder body outside carry workpiece as a long track, workpiece are made to consolidate sliding rail oil cylinder in big column It slides in the axial direction above.
In embodiment of the disclosure, chovr body 2 includes that the switching seal 21 set gradually along axial direction is connected to switching Body 22, switching 21 one end of seal seal the first firm oil cylinder 1, and switching 21 other end of seal and switching connected component 22 form one Grade switching chamber 23;Connected component 22 of transferring is connected to level-one switching chamber 23 and the second firm oil cylinder 3.It is the by the setting of chovr body The connection of both one firm oil cylinder and the second firm oil cylinder provides the transition in certain mechanical support, meanwhile, by system of transferring The standby structure being connected at closed at one end, internal cavities and the other end provides possibility for the oil circuit transfer of multi-stage oil cylinder.Of the invention First firm oil cylinder and the second firm oil cylinder have an independent oil piping system respectively, the one of hydraulic fluid port of the second firm oil cylinder and correspondence An oil circuit design on the first firm cylinder block, the oil circuit internal structure of the first firm oil cylinder and the second firm oil cylinder is but It is respectively independently arranged, and realizes their different functions.
In embodiment of the disclosure, the first firm oil cylinder 1 includes the first firm cylinder block 11 and the first firm oil cylinder Piston 12 buries the first firm oil cylinder first being sequentially communicated on the first firm 11 wall of cylinder block and stretches out hydraulic fluid port 13, first Firm oil cylinder stretches out oil circuit 14 and the first firm oil cylinder second stretches out hydraulic fluid port 15, and the first firm oil cylinder piston 12 of logical control is stretched Out, i.e., the first firm oil cylinder second stretches out hydraulic fluid port 15 and is connected to the oil cylinder cavity after the first firm oil cylinder piston, passes through first Firm oil cylinder first stretches out the control that the hydraulic oil that hydraulic fluid port 13 is passed through carries out piston rod stretching;First firm oil cylinder withdraws hydraulic fluid port 16 Control the withdrawal of the first firm oil cylinder piston 12, i.e., the withdrawal oil channel structure of the first firm oil cylinder 1: the first firm oil cylinder withdraws oil Chamber where mouth 16 and the first firm cylinder piston rod 12.Second firm oil cylinder 3 includes two-stage oil cylinder, in second level oil The two-stage cylinder of piston head the connection chovr body 2 and the second firm oil cylinder 3 of cylinder, makes at least one oil circuit of the second firm oil cylinder 3 It can be set on the first firm oil cylinder 1, realized by the switching of chovr body 2.Hydraulic fluid port in the present invention is radial opening knot The oil liquid of structure, drill power system can compare concentration with concentrated supply, the sebific duct position of fuel feeding, and tubing length and trend can protect It holds unanimously, simplifies whole cylinder structure, the sliding rail for the long access of oil cylinder outer wall provides available space.
In embodiment of the disclosure, the second firm oil cylinder 3 is two-stage oil cylinder, and the stretching oil circuit of the second firm oil cylinder 3 connects Logical chovr body 2 is arranged on the first firm oil cylinder 1, and the withdrawal oil circuit of the second firm oil cylinder 3 is arranged in the second firm oil cylinder 3; The end of the first firm oil cylinder 1 is arranged in the hydraulic fluid port for stretching out oil circuit;The end of the second firm oil cylinder 3 is arranged in the hydraulic fluid port for withdrawing oil circuit Portion.It is not take up the second level outer wall of cylinder block sled position of the second firm oil cylinder 3;Make the second firm oil cylinder 3, the first firm 1 and of oil cylinder The outer wall that chovr body 2 penetrates through becomes sliding rail use as a whole, and sliding rail stroke is much larger than the second level cylinder body of the second firm oil cylinder Length;Hydraulic fluid port position is relatively fixed, does not have to and then piston rod movement, avoids abrasion sebific duct, reduces sebific duct length;Second firm oil Cylinder 3 is that the propulsion stroke of two-stage oil cylinder increases, and but effectively controls total withdrawal length of the second firm oil cylinder 3.
Specifically, in embodiment of the disclosure, chovr body 2 includes the switching seal 21 set gradually along axial direction and turns Entire body 22 in succession, switching 21 one end of seal seal the first firm oil cylinder 1, switching 21 other end of seal and switching connected component 22 Form level-one switching chamber 23;The first switching of setting oil circuit 221 on switching connected component 22, the first switching oil circuit 221 are connected to level-one turn Connect chamber 23 and the second firm oil cylinder 3;The stretching oil circuit of second firm oil cylinder 3 include on the first firm 1 cylinder wall of oil cylinder successively Second firm oil cylinder first of connection setting stretches out hydraulic fluid port (111), the second firm oil cylinder stretches out oil circuit 112 and the second firm oil cylinder Second stretches out hydraulic fluid port 113, the second firm oil cylinder second stretches out hydraulic fluid port 113, level-one switching chamber 23, first is transferred oil circuit 221 and the The second level cylinder body of two firm oil cylinders 3 is sequentially communicated;The withdrawal oil circuit of second firm oil cylinder 3 includes being arranged in the second firm oil cylinder 3 The second firm oil cylinder first on cylinder wall withdraws hydraulic fluid port 331, and setting is steady in the second firm 32 wall of oil cylinder level-one cylinder body or second Gu the second firm oil cylinder second on 32 wall of oil cylinder second piston rod withdraws hydraulic fluid port 321, the second firm oil cylinder withdraws 322 and of oil circuit Second firm oil cylinder third withdraws hydraulic fluid port 323.
In embodiment of the disclosure, the setting of withdrawal oil communication chovr body 2 of the second firm oil cylinder 3 is in the first firm oil On cylinder 1, the stretching oil circuit of the second firm oil cylinder 3 is arranged in the second firm oil cylinder 3;The hydraulic fluid port setting for withdrawing oil circuit is steady first Gu the end of oil cylinder 1;The end of the second firm oil cylinder 3 is arranged in the hydraulic fluid port for stretching out oil circuit.The oil liquid of drill power system can be with Concentration is compared in concentrated supply, the sebific duct position of fuel feeding, and tubing length and trend can be consistent, and simplifies whole oil cylinder knot Structure, the sliding rail for the long access of oil cylinder outer wall provide available space.
Specifically, in embodiment of the disclosure, chovr body 2 includes the switching seal 21 set gradually along axial direction and turns Entire body 22 in succession, switching 21 one end of seal seal the first firm oil cylinder 1, switching 21 other end of seal and switching connected component 22 Form level-one switching chamber 23;The second switching oil circuit 222, axially disposed first switching oil are disposed radially on switching connected component 22 Road 221 and third switching oil circuit 223, the first switching oil circuit 221 are connected to the second switching oil circuit 222;It transfers connected component 22 and the The contact jaw of two firm oil cylinders 3 forms second level switching chamber 24, and piston head is arranged on the second firm oil cylinder second piston head 34 and passes Hydraulic fluid port 341;The withdrawal oil circuit of second firm oil cylinder 3 includes the second firm oil cylinder being arranged on the first firm 11 wall of cylinder block First withdrawal hydraulic fluid port 111 ' and to be crossed on the first firm cylinder block 11 and the second firm 33 wall of oil cylinder second level cylinder body second steady Gu oil cylinder withdraws oil circuit 112 ', the second firm oil cylinder withdraws oil circuit 112 ' and third switching oil circuit 223, the second firm oil cylinder second Hydraulic fluid port 113 ' is withdrawn to be connected to the second firm oil cylinder third withdrawal hydraulic fluid port 324;The stretching oil circuit of second firm oil cylinder 3 includes setting The second firm oil cylinder first on the second firm 33 wall of oil cylinder second level cylinder body stretches out hydraulic fluid port 331 ' and the second firm oil cylinder stretches out Oil circuit 332, the second firm oil cylinder first stretches out hydraulic fluid port 331 ', the second firm oil cylinder stretches out the switching of oil circuit 332, first oil circuit 221, Second switching oil circuit 222, second level switching chamber 24, the second firm oil cylinder second level cylinder body 33 and piston head pass hydraulic fluid port 341 and are connected to.
A kind of drilling machine firm sliding rail cylinder oil system of big column, the drilling machine firm sliding rail of big column including the disclosure Oil cylinder, and the stretching oil communication chovr body 2 of the second firm oil cylinder 3 is arranged on the first firm oil cylinder 1;Chovr body 2 includes edge The switching seal 21 and switching connected component 22 axially set gradually, switching 21 one end of seal seals the first firm oil cylinder 1, turns It connects 21 other end of seal and switching connected component 22 forms level-one switching chamber 23;The first switching of setting oil circuit on switching connected component 22 221, the first switching oil circuit 221 is connected to level-one switching chamber 23 and the second firm oil cylinder 3;The stretching oil circuit packet of second firm oil cylinder 3 Include the second firm firm oil of the stretching of oil cylinder first hydraulic fluid port 111, second that setting is sequentially communicated on the first firm 1 cylinder wall of oil cylinder Cylinder stretches out oil circuit 112 and the second firm oil cylinder second stretches out hydraulic fluid port 113, and the second firm oil cylinder second stretches out hydraulic fluid port 113, level-one turns The second level cylinder body for connecing the switching oil circuit 221 of chamber 23, first and the second firm oil cylinder 3 is sequentially communicated;The withdrawal oil of second firm oil cylinder 3 Road includes that the second firm oil cylinder first being arranged on the second firm 3 cylinder wall of oil cylinder withdraws hydraulic fluid port 331, and setting is firm second The second firm oil cylinder second on 32 wall of oil cylinder level-one cylinder body or the second firm 32 wall of oil cylinder second piston rod withdraw hydraulic fluid port 321, Second firm oil cylinder withdraws oil circuit 322 and the second firm oil cylinder third withdraws hydraulic fluid port 323.
A kind of drilling machine firm sliding rail cylinder oil system of big column, consolidates sliding rail including the big column of drilling machine of the invention Oil cylinder, and the withdrawal oil communication chovr body 2 of the second firm oil cylinder 3 is arranged on the first firm oil cylinder 1;It transfers on connected component 22 It is disposed radially the second switching oil circuit 222, axially disposed first switching oil circuit 221 and third switching oil circuit 223, the first switching Oil circuit 221 is connected to the second switching oil circuit 222;The contact jaw of switching connected component 22 and the second firm oil cylinder 3 forms second level switching Chamber 24 is arranged piston head on the second firm oil cylinder second piston head 34 and passes hydraulic fluid port 341;The withdrawal oil circuit of second firm oil cylinder 3 The second firm oil cylinder first including being arranged on the first firm 11 wall of cylinder block withdraws hydraulic fluid port 111 ' and is crossed on first surely Gu the second firm oil cylinder withdraws oil circuit 112 ', the second firm oil cylinder on cylinder block 11 and the second firm 33 wall of oil cylinder second level cylinder body It withdraws oil circuit 112 ' and third switching oil circuit 223, the second firm oil cylinder second withdraws hydraulic fluid port 113 ' and the second firm oil cylinder third Hydraulic fluid port 324 is withdrawn to be connected to;The stretching oil circuit of second firm oil cylinder 3 includes being arranged on the second firm 33 wall of oil cylinder second level cylinder body Second firm oil cylinder first stretches out hydraulic fluid port 331 ' and the second firm oil cylinder stretches out oil circuit 332, and the second firm oil cylinder first stretches out oil Mouthfuls 331 ', second firm oil cylinder stretch out oil circuit 332, first transfer oil circuit 221, second transfer oil circuit 222, second level switching chamber 24, Second firm oil cylinder second level cylinder body 33 and piston head pass hydraulic fluid port 341 and are connected to.
A kind of pillar, the big column of drilling machine in pillar in the setting present invention consolidate in sliding rail oil cylinder or pillar setting originally Drilling machine in invention consolidates sliding rail cylinder oil system with big column.
Big column provided by the invention consolidates sliding rail oil cylinder, in underground coal mine drilling machine apply when be two oil cylinders be one group Synchronous working.Mainly play the role of firm, support and sliding rail up and down simultaneously, to reach main purpose of the invention, Oil cylinder is to be vertically raised in normal work.The piston rod ballhead of first firm oil cylinder 1 couples round fixing seat stretching and withstands on On lower roof plate, flange is fixed on drilling machine crawler belt car body;The piston rod head of second firm oil cylinder 3 couples round fixing seat and stretches out top On upper plate.The structure provided by the invention that two oil cylinders are axially integrated up and down.When the piston rod of second firm oil cylinder 3 is withdrawn Oil cylinder contour length is short, and after two-stage piston rod all stretches out, stroke is enough long can be head-to-foot with one without connecing extension bar, completes up and down Firm function;The structure that a kind of oil cylinder firm up and down provided is integrated, oil duct are all provided in oil cylinder except disengaging oilhole The cylinder body of the structure in portion, the cylinder body of the second firm oil cylinder 3 and the first firm oil cylinder 1 sliding rail as a whole, the second firm oil cylinder 3 One oilhole is provided with the cylinder body top of the second firm oil cylinder 3, knot of another oilhole on the cylinder body of the first firm oil cylinder 1 Structure makes sliding rail stroke long enough, and the cylinder body of two oil cylinders can be used as whole sliding rail support work package and slide on it, expands brill The open area of machine;The oil channel structure of the second firm oil cylinder 3 provided, two oilholes are all provided on cylinder body, pass through oil cylinder Internal cleverly oil channel structure designs, and the oilhole of the second firm cylinder rod chamber is successfully introduced into two-level oil cylinder's body the top Structure avoids the case where oilhole is designed on the piston rod, and when piston rod is taken exercises, oil-hole location can be remained unchanged, and not influenced With the sebific duct of oilhole fuel feeding.The present invention is provided for underground coal mine stoop way girdle low level hole construction drill using drilling machine a kind of big Column consolidates sliding rail oil cylinder.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention equally should be considered as the content that the present invention is invented.

Claims (10)

1. a kind of drilling machine consolidates sliding rail oil cylinder with big column, which is characterized in that including the first axially disposed firm oil cylinder (1), chovr body (2) and the second firm oil cylinder (3);
Second firm oil cylinder (3) level-one cylinder bodies at least more than the first firm oil cylinder (1), and at least the one of the second firm oil cylinder (3) A oil communication chovr body (2) is arranged on the first firm oil cylinder (1).
2. drilling machine according to claim 1 consolidates sliding rail oil cylinder with big column, which is characterized in that the chovr body (2) Including the switching seal (21) set gradually along axial direction and switching connected component (22), switching seal (21) one end sealing first Firm oil cylinder (1), switching seal (21) other end and switching connected component (22) form level-one switching chamber (23);
Switching connected component (22) connection level-one switching chamber (23) and the second firm oil cylinder (3).
3. drilling machine according to claim 1 or 2 consolidates sliding rail oil cylinder with big column, which is characterized in that described first is steady Gu oil cylinder (1) includes the first firm cylinder block (11) and the first firm oil cylinder piston (12), in the first firm cylinder block (11) buried on wall the first firm oil cylinder first being sequentially communicated stretch out hydraulic fluid port (13), the first firm oil cylinder stretch out oil circuit (14) and First firm oil cylinder second stretches out hydraulic fluid port (15), controls the stretching of the first firm oil cylinder piston (12);First firm oil cylinder is withdrawn Hydraulic fluid port (16) controls the withdrawal of the first firm oil cylinder piston (12);
The firm oil cylinder of described second (3) includes two-stage oil cylinder, and in the second level, the piston head of oil cylinder is connected to chovr body (2) and second The two-stage cylinder of firm oil cylinder (3).
4. drilling machine according to claim 1 or 2 consolidates sliding rail oil cylinder with big column, which is characterized in that described second is steady Gu oil cylinder (3) is two-stage oil cylinder, the stretching oil communication chovr body (2) of the second firm oil cylinder (3) is arranged in the first firm oil cylinder (1) on, the withdrawal oil circuit setting of the second firm oil cylinder (3) is in the second firm oil cylinder (3);
The hydraulic fluid port for stretching out oil circuit is arranged in the end of the first firm oil cylinder (1);The hydraulic fluid port setting of oil circuit is withdrawn in the second firm oil The end of cylinder (3).
5. drilling machine according to claim 4 consolidates sliding rail oil cylinder with big column, which is characterized in that the chovr body (2) Including the switching seal (21) set gradually along axial direction and switching connected component (22), switching seal (21) one end sealing first Firm oil cylinder (1), switching seal (21) other end and switching connected component (22) form level-one switching chamber (23);
The first switching oil circuit (221) of setting in switching connected component (22), the first switching oil circuit (221) connection level-one transfer chamber (23) With the second firm oil cylinder (3);
The stretching oil circuit of second firm oil cylinder (3) includes to be sequentially communicated the second of setting on the first firm oil cylinder (1) cylinder wall Firm oil cylinder first stretches out hydraulic fluid port (111), the second firm oil cylinder stretches out oil circuit (112) and the second firm oil cylinder second stretches out hydraulic fluid port (113), it is steady to stretch out hydraulic fluid port (113), level-one switching chamber (23), the first switching oil circuit (221) and second for the second firm oil cylinder second Gu the second level cylinder body of oil cylinder (3) is sequentially communicated;
The withdrawal oil circuit of second firm oil cylinder (3) includes the second firm oil cylinder being arranged on the second firm oil cylinder (3) cylinder wall First withdraws hydraulic fluid port (331), is arranged in the second firm oil cylinder level-one cylinder body (32) wall or the second firm oil cylinder second piston rod (32) the second firm oil cylinder second on wall withdraws hydraulic fluid port (321), the second firm oil cylinder withdraws oil circuit (322) and the second firm oil Cylinder third withdraws hydraulic fluid port (323).
6. drilling machine according to claim 1 or 2 consolidates sliding rail oil cylinder with big column, which is characterized in that described second is steady Gu the withdrawal oil communication chovr body (2) of oil cylinder (3) is arranged on the first firm oil cylinder (1), the stretching of the second firm oil cylinder (3) Oil circuit setting is in the second firm oil cylinder (3);
The hydraulic fluid port for withdrawing oil circuit is arranged in the end of the first firm oil cylinder (1);The hydraulic fluid port setting of oil circuit is stretched out in the second firm oil The end of cylinder (3).
7. drilling machine according to claim 6 consolidates sliding rail oil cylinder with big column, which is characterized in that the chovr body (2) Including the switching seal (21) set gradually along axial direction and switching connected component (22), switching seal (21) one end sealing first Firm oil cylinder (1), switching seal (21) other end and switching connected component (22) form level-one switching chamber (23);
Be disposed radially the second switching oil circuit (222) in switching connected component (22), axially disposed first switching oil circuit (221) and Third is transferred oil circuit (223), and the first switching oil circuit (221) is connected to the second switching oil circuit (222);It transfers connected component (22) and the The contact jaw of two firm oil cylinders (3) forms second level switching chamber (24), is arranged on the second firm oil cylinder second piston head (34) and lives Chock plug passes hydraulic fluid port (341);
The withdrawal oil circuit of second firm oil cylinder (3) includes the second firm oil cylinder being arranged on the first firm cylinder block (11) wall First withdraws hydraulic fluid port (111 ') and is crossed on the first firm cylinder block (11) and the second firm oil cylinder second level cylinder body (33) wall Second firm oil cylinder withdraws oil circuit (112 '), and the second firm oil cylinder withdraws oil circuit (112 ') and third switching oil circuit (223), second Firm oil cylinder second withdraws hydraulic fluid port (113 ') and is connected to the second firm oil cylinder third withdrawal hydraulic fluid port (324);
The stretching oil circuit of the firm oil cylinder of described second (3) includes the be arranged on the second firm oil cylinder second level cylinder body (33) wall Two firm oil cylinders first stretch out hydraulic fluid port (331 ') and the second firm oil cylinder stretches out oil circuit (332), and the second firm oil cylinder first stretches out Hydraulic fluid port (331 '), the second firm oil cylinder stretch out oil circuit (332), the first switching oil circuit (221), the second switching oil circuit (222), second level It transfers chamber (24), the second firm oil cylinder second level cylinder body (33) and piston head pass hydraulic fluid port (341) connection.
8. a kind of drilling machine consolidates sliding rail cylinder oil system with big column, which is characterized in that including any right of claim 1-7 It is required that the drilling machine consolidates sliding rail oil cylinder with big column, and the stretching oil communication chovr body (2) of the second firm oil cylinder (3) is set It sets on the first firm oil cylinder (1);
The chovr body (2) includes the switching seal (21) set gradually along axial direction and switching connected component (22), is transferred close It seals body (21) one end and seals the first firm oil cylinder (1), switching seal (21) other end and switching connected component (22) form level-one It transfers chamber (23);
The first switching oil circuit (221) of setting in switching connected component (22), the first switching oil circuit (221) connection level-one transfer chamber (23) With the second firm oil cylinder (3);
The stretching oil circuit of second firm oil cylinder (3) includes to be sequentially communicated the second of setting on the first firm oil cylinder (1) cylinder wall Firm oil cylinder first stretches out hydraulic fluid port (111), the second firm oil cylinder stretches out oil circuit (112) and the second firm oil cylinder second stretches out hydraulic fluid port (113), it is steady to stretch out hydraulic fluid port (113), level-one switching chamber (23), the first switching oil circuit (221) and second for the second firm oil cylinder second Gu the second level cylinder body of oil cylinder (3) is sequentially communicated;
The withdrawal oil circuit of second firm oil cylinder (3) includes the second firm oil cylinder being arranged on the second firm oil cylinder (3) cylinder wall First withdraws hydraulic fluid port (331), is arranged in the second firm oil cylinder level-one cylinder body (32) wall or the second firm oil cylinder second piston rod (32) the second firm oil cylinder second on wall withdraws hydraulic fluid port (321), the second firm oil cylinder withdraws oil circuit (322) and the second firm oil Cylinder third withdraws hydraulic fluid port (323).
9. a kind of drilling machine consolidates sliding rail cylinder oil system with big column, which is characterized in that including any right of claim 1-7 It is required that the drilling machine consolidates sliding rail oil cylinder with big column, and the withdrawal oil communication chovr body (2) of the second firm oil cylinder (3) is set It sets on the first firm oil cylinder (1);
The chovr body (2) includes the switching seal (21) set gradually along axial direction and switching connected component (22), is transferred close It seals body (21) one end and seals the first firm oil cylinder (1), switching seal (21) other end and switching connected component (22) form level-one It transfers chamber (23);
Be disposed radially the second switching oil circuit (222) in switching connected component (22), axially disposed first switching oil circuit (221) and Third is transferred oil circuit (223), and the first switching oil circuit (221) is connected to the second switching oil circuit (222);It transfers connected component (22) and the The contact jaw of two firm oil cylinders (3) forms second level switching chamber (24), is arranged on the second firm oil cylinder second piston head (34) and lives Chock plug passes hydraulic fluid port (341);
The withdrawal oil circuit of second firm oil cylinder (3) includes the second firm oil cylinder being arranged on the first firm cylinder block (11) wall First withdraws hydraulic fluid port (111 ') and is crossed on the first firm cylinder block (11) and the second firm oil cylinder second level cylinder body (33) wall Second firm oil cylinder withdraws oil circuit (112 '), and the second firm oil cylinder withdraws oil circuit (112 ') and third switching oil circuit (223), second Firm oil cylinder second withdraws hydraulic fluid port (113 ') and is connected to the second firm oil cylinder third withdrawal hydraulic fluid port (324);
The stretching oil circuit of the firm oil cylinder of described second (3) includes the be arranged on the second firm oil cylinder second level cylinder body (33) wall Two firm oil cylinders first stretch out hydraulic fluid port (331 ') and the second firm oil cylinder stretches out oil circuit (332), and the second firm oil cylinder first stretches out Hydraulic fluid port (331 '), the second firm oil cylinder stretch out oil circuit (332), the first switching oil circuit (221), the second switching oil circuit (222), second level It transfers chamber (24), the second firm oil cylinder second level cylinder body (33) and piston head pass hydraulic fluid port (341) connection.
10. a kind of pillar, which is characterized in that drilling machine as claimed in any one of claims 1 to 7 is arranged in pillar and is stood with big Column, which consolidates, is arranged claim 8 or the drilling machine as claimed in claim 9 firm sliding rail oil cylinder of big column in sliding rail oil cylinder or pillar Oil piping system.
CN201910354604.9A 2019-04-29 2019-04-29 Large-upright-column-used stable sliding rail oil cylinder, oil circuit system and strut for drilling machine Active CN110173479B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398105B1 (en) * 2002-09-10 2007-03-07 GF Welding S.p.A. Two-stage actuating cylinder, particularly for operating a welding gun
CN101865178A (en) * 2009-04-15 2010-10-20 北京谊安医疗系统股份有限公司 Two-stage hydraulic cylinder
CN202768525U (en) * 2012-07-10 2013-03-06 浙江师范大学 Piston bi-directional moving hydraulic cylinder
CN104358738A (en) * 2014-10-14 2015-02-18 北京工业大学 Sequentially-acting multilevel air cylinder
CN104632759A (en) * 2015-01-23 2015-05-20 山东隆源液压科技有限公司 Accessory quick-change oil cylinder
CN109185265A (en) * 2018-10-26 2019-01-11 千人计划常州新能源汽车研究院有限公司 A kind of hydraulic cylinder
CN109424597A (en) * 2017-08-29 2019-03-05 波音公司 The electronic hydrostatic actuator of low profile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398105B1 (en) * 2002-09-10 2007-03-07 GF Welding S.p.A. Two-stage actuating cylinder, particularly for operating a welding gun
CN101865178A (en) * 2009-04-15 2010-10-20 北京谊安医疗系统股份有限公司 Two-stage hydraulic cylinder
CN202768525U (en) * 2012-07-10 2013-03-06 浙江师范大学 Piston bi-directional moving hydraulic cylinder
CN104358738A (en) * 2014-10-14 2015-02-18 北京工业大学 Sequentially-acting multilevel air cylinder
CN104632759A (en) * 2015-01-23 2015-05-20 山东隆源液压科技有限公司 Accessory quick-change oil cylinder
CN109424597A (en) * 2017-08-29 2019-03-05 波音公司 The electronic hydrostatic actuator of low profile
CN109185265A (en) * 2018-10-26 2019-01-11 千人计划常州新能源汽车研究院有限公司 A kind of hydraulic cylinder

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