Undergroundtunnel Singlehydrauli Support Prop

The hydraulic prop is the main component to support and carry the hydraulic support, it directly affects the performance of the hydraulic support. Therefore, in addition to reasonable working resistance and reliable working characteristics, hydraulic prop must also have enough compressive and bending strength, good sealing performance, simple structure and suitable for the work of hydraulic support needs.

Hydraulic prop is generally composed of piston, piston rod, cylinder block three parts. Because the support work, the column bearing capacity is large, and the drop column force is small, so the piston rod diameter is larger, often use hollow structure, in order to ensure sufficient stiffness of the piston is generally y sealing ring, copper ring guide, cylinder bottom welding. The cylinder block and the cylinder head are connected by steel wire, thread or clasp. In order to prevent the external coal seam and other stolen goods into the cylinder block, the guide sleeve should be equipped with a dustproof ring. For the single telescopic column, in order to expand the support height of the hydraulic support, can use mechanical extension rod, the head structure of the column is spherical, and the connection between the top beam or the base with pin shaft or block fixed, in order to make the column in the work by a certain adaptability.

The liquid supply method of hydraulic prop consists of two ways: internal liquid supply and external liquid supply. In addition to the double telescopic column with internal liquid supply mode, the single telescopic column is mostly external liquid supply mode, which is simple in structure, convenient in processing and maintenance. If you need hydraulic support column, you are welcome to contact us in time

Fixed protection, such as wooden brackets, shall be applied in the delivery and transportation of y303-30 hydraulic support columns. In case of large quantities, such as hydraulic jacks, which are delivered in batches, shall be bundled firmly to avoid falling off, extrusion, rolling collision and other damages. If it is in winter, the product should be injected with antifreeze according to the low temperature of the applicable area and the transportation distance. In other seasons, the emulsion in the column of Y303-30 hydraulic support should be emptied. However, the transportation and storage process of the column after the drainage should be guaranteed, and no corrosion phenomenon should occur inside.

If the hydraulic support column of Y303-30 has been stored for more than three months, the emulsion in the hydraulic support column should be checked for deterioration. If so, the emulsion should be replaced. When the drainage method is adopted, the rust should be checked. The hydraulic support column of Y303-30 should be paid attention to and ensure that the joint seat is not damaged during the use, and the transportation package should be strong and reliable. The column should be loaded and unloaded lightly in the process of transportation. Special attention should be paid to the joint seat so as not to damage the interface and affect the connection use of the hydraulic support column.

In fact, the above methods are not only for y303-30 hydraulic support column, but also for all kinds of hydraulic support jack cylinders. In transportation, storage and use, some problems can be avoided for the hydraulic support column or hydraulic support jack. Henan Shuangzhi Machinery as hydraulic support accessories manufacturers, can produce and process hydraulic support column, hydraulic support jack, bed beam, bed, bottom adjustment beam and other accessories, welcome new and old customers to consult understanding, looking forward to working with you!

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DWS25 Double Telescopic Suspension Hydraulic Acrow Prop

Introduction of DWS25 Double Telescopic Suspension Hydraulic Acrow Prop
DWS25 Double Telescopic Suspension Hydraulic Acrow Prop using mine (suspension) technical principles, pillars suspension force to achieve four-fifths
of the working resistance, the column is only one fifth of the force. Thus greatly improving the pillars of stability and security, improve the supporting pillar height, carrying capacity and anti-bias load capability.

Application of DWS25 Double Telescopic Suspension Hydraulic Acrow Prop
DWS25 Double Telescopic Suspension Hydraulic Acrow Prop abandoned lengthened cylindrical, stigma, and pistons, no arc welds, no internal leakage, visual inspection with the naked eye, pillar when disclosed, maybe replaced at any pillars that prop safer avoid the pillar caused by the presence of leaks inside the pillar top and cumbersome virtual testing work.


Parameter of DWS25 Double Telescopic Suspension Hydraulic Acrow Prop

Model Maxi Height Mini Height Working Stroke Working Resistance Weight
DWS25-200/82X250010501450200KN60KG
DWS25-250/92X25001050145025065
DWS25-200/92X35001500200020085

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DN28 Steel Single Hydraulic Acrow Prop Jack



Introduction of DN28 Steel Single Hydraulic Acrow Prop Jack
Mine DN28 Steel Single Hydraulic Acrow Prop Jack is supporting parts of various frame type hydraulic powered supports in fully mechanized coalface, light duty roof caving coal hydraulic support, for the support of support to help push slip, balance, lateral push function, is the main component of the frame and various parts of the action.
Variety Specification of DN28 Steel Single Hydraulic Acrow Prop Jack
According to zoning, DN28 Steel Single Hydraulic Acrow Prop Jack can be divided for pushing jack, front beam jack, retractable beam jack, the quilibrium jack, side pushing jack, Jack, anti down Jack, anti-skid jack, slope protecting Jack.
How to Use DN28 Steel Single Hydraulic Acrow Prop Jack?
1. Lifting DN28 Steel Single Hydraulic Acrow Prop Jack up by the hydraulic support on the integrated control valve;
2. Should be used to meet the requirements of the MT76 emulsion. The emulsion should be kept clean, and replaced in time to prevent damage to the friction surface of the jack and affect the sealing effect;

Technical Parameter of DN28 Steel Single Hydraulic Acrow Prop Jack
ModelMax
height (mm)Min
height (mm)Distance (mm)working
resistance (kn)
Working
pressure (Mpa)cylinder
diameter (mm)base area (mm*2)Weight (kg)
DN315-160/9031502450700160259012078
DN28-200/9028002100700200319012074
DN25-250/9025001800700245399012068
DN22-300/902240154070029446.39012060
DN20-300/902000136064029446.39012055
DN18-250/8018001250550245498012045
DN16-250/8016001100500245498012041
DN14-250/8014001000400245498012038
DN12-250/801200870330245498012034
DN10-25/801000720280245498012029
DN08-250/80800590210245498012026
DN06-25/80650510140245498012023

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DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop
Introduction of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop
DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop for foreign Note constant resistive temporary pillars, it is mainly used in coal mines to dig ends temporary support, can also be used for other mining and geotechnical engineering applications require temporary shoring, the use of lightweight composite products material produced.
Available coal hydrostatic water to make it work, with a light weight corrosion-resistant and easy to operate and so on.
Application of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop
DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop as a temporary support equipment, is widely used in coal industry, roadway excavation, roadway maintenance, new advanced support and temporary support prop equipment.
Parameter of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop

ParameterDWB22-30/100DWB25-30/100DWB28-30/100
Max.Height(mm)224025002800
Working Stroke(mm)570/820570/820570/820
Rated Resistance(kN)303030
Rated Working Pressure(MPa)3.83.83.8
Setting Pressure(kN)303030
Cylinder Inside Dia.(mm)100100100
Working Pressure of Safety Valve(MPa)3.83.83.8
Weight(kg)212222.5
ParameterDWB31.5-30/100DWB35-30/100DWB38-30/100
Max.Height(mm)315035003800
Working Stroke(mm)570/820570/820820
Rated Resistance(kN)303030
Rated Working Pressure(MPa)3.83.83.8
Setting Pressure(kN)303030
Cylinder Inside Dia.(mm)100100100
Working Pressure of Safety Valve(MPa)3.83.83.8
Weight(kg)252736
Working MediumEmulsified Liquid, Hydrostatic Water.

Hydraulic prop is generally composed of piston, piston rod, cylinder block three parts. Because the support work, the column bearing capacity is large, and the drop column force is small, so the piston rod diameter is larger, often use hollow structure, in order to ensure sufficient stiffness of the piston is generally y sealing ring, copper ring guide, cylinder bottom welding. The cylinder block and the cylinder head are connected by steel wire, thread or clasp. In order to prevent the external coal seam and other stolen goods into the cylinder block, the guide sleeve should be equipped with a dustproof ring. For the single telescopic column, in order to expand the support height of the hydraulic support, can use mechanical extension rod, the head structure of the column is spherical, and the connection between the top beam or the base with pin shaft or block fixed, in order to make the column in the work by a certain adaptability.

The liquid supply method of hydraulic prop consists of two ways: internal liquid supply and external liquid supply. In addition to the double telescopic column with internal liquid supply mode, the single telescopic prop is mostly external liquid supply mode, which is simple in structure, convenient in processing and maintenance.

DWX Mining Suspension Single Hydraulic Prop Acrow Jac

Parameter of DWX Mining Suspension Single Hydraulic Prop Acrow Jack
Item model Max height
(mm) Min height
(mm) Working
Operation
(mm) Working
resistance
(kN) Weight
(kg) Pillar scope of work
(mm)
DW35-180/100X35001960154018071.01960~3500
DW31-180/100X31501780137065.01780~3150
DW28-250/100X28001600120025059.01600~2800
DW25-250/100X25001430107054.01430~2500
DW22-300/100X2240128096030049.51280~2200
DW20-300/100X2000115085045.01150~2000
DW18-300/100X1800103576541.51035~1800
DW16-300/100X160092068038.0920~1600
DW14-300/100X140081059034.0810~1400
DW12-300/100X120070050030.5700~1200
DW10-300/100X100059540527.5595~1000
DW08-300/100X80049031024.0490~800
DW06-300/100X63040023021.0400~630

Project / modelDW45-250/110XL(G)DW42-250/110XL(G)DW40-250/110XL(G)DW38-250/110XL(G)
Working resistance
F1 KN 250
Work of hydraulic
P1 MPa 28.34
initial supporting force
F2 KN 132.4~176.7
pump station pressure
P2 MPa 15~20
Max height
H max mm 4500420040003800
Min height
H min mm 2533237322632153
Working stroke
mm 1967182717371647
Weight w kg 102.496.7892.9489.1

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U-channel Tunnel Steel Support
Keywords: U-channel Steel Support, Tunnel Steel Support, Steel Support For Sale
Introduction of U-channel Steel Support For Coal Mine
U channel steel support cross section is shaped like the letter "U" in English. National production of u-shape cross-section shape, geometric parameters and material is different, at present China''''s production of u-shape model mainly include stepping, U25, U29, U36 these four. The stepping and U25 waist position; U29, U36 belongs to the ear. Stepping up the carrying capacity is very low, now rarely production.
U channel steel support with high initial supporting force, supporting intensity big, easy to install and is not easy to deformation, so often used in the manufacture of roadway yielding metal stents, mine, mine roadway secondary supporting of roadway, and mountain tunnel support support purposes
Use, effectively reduce the roof caving u-shape set, help such as accidents, safe and reliable, and enhances the stability of the mine ventilation system. Choose u-shape flexible support, better solved the difficult problem of the excavation support
Structure of U-channel Steel Support For Coal Mine
1.Top Beam
Top beam is circular arch, its amount depending on the cross section of roadway with different sizes, support force, transportation conditions, section 1 and section number.
2.Column leg
There are three kinds of back leg , one kind is upside for circular arc form, for straight line at the bottom; The second is all for the curved shape, and only one radius of curvature; The third is all for the curved shape, but there are two curvature radius. Back leg in welding under the base, the base of large plate on the hard and soft;
3.Connection parts
Fitting is a support section and internode card device, can the internode connection effect, can also be connected the two compression steel joint parts, provide pre-tightening force, make the u-shape between friction, thereby ensuring that the arch has a certain resistance and certain drop-off.
4.Rod between support
Rod between support is to enhance the relative stability, the support bracket from longitudinal connection, form a whole.
5.Back-up material
Back-up material is u-shaped steel support between supports and surrounding rock filling material, improve the stress of the support, to improve the bearing capacity and maintain the stability of surrounding rock.
Characteristic of U-channel Steel Support For Coal Mine

1,Stand high pressure , support long time, easy to installation and not easy to be out of shape
2,compared with other rigid support , U-shaped steel support has a scalable and reliable carrying capacity to adapt to load and deformation of soft rock.
3,U-shaped steel support bracket support cross back high utilization convenient small amount of maintenance.
4,U3 steel support recycling reuse rate, reduce prop use, very obvious envir