CN201358796Y - High-tenacity full-stroke suspending outward injection type individual hydraulic prop - Google Patents
High-tenacity full-stroke suspending outward injection type individual hydraulic prop Download PDFInfo
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- CN201358796Y CN201358796Y CNU200920019274XU CN200920019274U CN201358796Y CN 201358796 Y CN201358796 Y CN 201358796Y CN U200920019274X U CNU200920019274X U CN U200920019274XU CN 200920019274 U CN200920019274 U CN 200920019274U CN 201358796 Y CN201358796 Y CN 201358796Y
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Abstract
A high-tenacity full-stroke suspending outward injection type individual hydraulic prop, which comprises a hinging top cover (1), a sealing mandrel body (2), a movable column body (3), a handle assembly (4), an oil cylinder (5), an offsetting spring (6), a strengthening guiding sleeve (8), a base body (11), an A type sealing ring (18), a B type sealing ring (48), a three-purpose valve (27), an iron shoe (28), an exhaust valve (52) and the like, wherein the hinging top cover (1) is connected with the upper end of the movable column body (3), the middle portion of the movable column body (3) is provided with the handle assembly (4), the upper end of the oil cylinder (5) is connected with the handle assembly (4), the lower end of the oil cylinder (5) is connected with the base body (11), the top end of the sealing mandrel body (2) is connected with the hinging top cover (1), and the iron shoe (28) is arranged on the external side of the base body (11). The injection height of the three-purpose valve can be adjusted up and down and can rotate left and right according to needs. The individual hydraulic prop solves the problems that the prop does not need to be inversed or discharge air horizontally during the primary injection. The individual hydraulic prop has the advantages of simple structure, safety, reliability, strong sealing property and long service life. The assembly and disassembly is convenient and rapid, the labor intensity is reduced, and the stability, the general purpose and the adaptability of the prop are guaranteed.
Description
Technical field
The utility model relates to mine equipment equipment, specifically a kind of high-tenacity total travel suspension outside injection type hydraulic pillar.Be applicable to common mechanical coal mining or face supporting roof, comprehensive mining machinery coal-face, end support top board, the comprehensive rivet clasp point post of face end support or the general supporting usefulness in other tunnel of adopting.
Background technology
Circulation adds carrier fluid and presses hydraulic props such as pillar, two fluid injection hydraulic prop, high sealability hydraulic prop, common DW type hydraulic prop, DWX type suspension type of force plunger formula hydraulic prop in having in the prior art.That above-mentioned pillar has because stroke is short, the pillar description that needs is many, has increased fund input and the management cost of colliery to pillar equipment.Though what have has liquid because of exocoel in the pillar, pressure is unequal.Though exocoel has the liquid with equal pressure in the pillar that has, the pillar stroke is also big, and the post alive in the pillar belongs to unjointed slender axles.Machining slender shaft length, precision, difficulty are big, are not easy to business organization and produce, and guarantee crudy.The seamless steel pipe wall thickness that post, oil cylinder adopted of living simultaneously is certain, and after having processed seal in the above, connecting the groove of part such as steel wire, the pillar supporting intensity is affected.The pillar triple-use valve that has in addition is installed on the cylinder alive, and the fluid injection of triple-use valve height raises along with the rising of the cylinder of living during fluid injection; Though the pillar triple-use valve that has is fixed on the oil cylinder upper end, the fluid injection of triple-use valve highly can not raise along with the rising of the cylinder of living during fluid injection.But along with specification, the model difference of pillar, promptly the minimum constructive height of pillar do not wait (from 300～2500mm), same inconvenient operation.In the existing pillar, the inner seal cover in post upper end of living because wall is thin, can not be processed the fabrication hole when being used for the pillar dismounting in the above.Therefore make troubles for the dismounting solid strut, strengthened labour intensity.Just can carry out exhaust after pillar fluid injection first need be inverted pillar or keep flat simultaneously, because of the downhole operations limited space, operation inconvenience, labor strength is big, has potential safety hazard.The skate that existing in addition pillar is joined is a separate component, be not connected as a single entity with pillar, so pillar can not promote in company with the lifting of pillar when being shifted in the down-hole yet.Pillar needs short distance setting prop, support just, work and unloading plurality of processes in the down-hole frequently moves and repeats operation, and dismounting skate workload is big, and labour intensity is big, for the operation of down-hole support work has brought great inconvenience.
Summary of the invention
The purpose of this utility model provides a kind of novel structure, reasonable, the intensity height, sealing performance is strong, and pillar fluid injection first, exhaust are succinct, easy to use, loading and unloading are quick, compliance is strong, alleviates labor strength, prolongs pillar application life, make things convenient for organization and management, guarantee the high-tenacity total travel suspension outside injection type hydraulic pillar that properties of product are stable, safe, reliable, general and compliance is good.
The utility model is achieved in that the utility model DW06～45GQX type φ 100mm, the various serial cylinder diameter high-tenacity total travel suspension hydraulic props of φ 110mm, φ 125mm, is a kind of outer feed flow fast constant-resistance type pillar.It by hinged top lid, sealed core axis body, live cylinder, handgrip assembly, oil cylinder, back-moving spring, reinforcing fairlead, base body, auxiliary handle, A RunddichtringO, Type B sealing ring, outlet valve, elastic cylindrical pin, stop valve, two-way snap joint or high-pressure rubber pipe, sleeve, triple-use valve, skate, and connect several major parts such as steel wire, O shape circle, anti-extrusion ring, guide ring, dust ring, U type card and form; It is characterized in that: hinged top lid is connected by elastic cylindrical pin with the connecting axle on the cylinder top of living; The cylinder of living is made up of plunger tube and connecting axle; The handgrip assembly is installed at cylinder alive middle part, by the fairlead that has several apertures in the handgrip assembly A RunddichtringO and the cylinder sealing of living are installed, the sealing that directly matches in the middle of the connecting axle of cylinder top of living with the sealed core axis body, cylinder alive bottom and reinforcing fairlead are by being connected fixation with steel wire; Reinforce uniform several apertures in fairlead border, reinforce fairlead and slide up and down at cylinder cavity in company with the cylinder of living, O shape circle, the guide ring installed above play soft contact and guide effect; Outlet valve is made up of exhaust piston and standing screw; Outlet valve is installed in the middle of the connecting axle of cylinder alive top, and installation direction seals, is connected, fixes with the cylinder top connecting axle of living by O shape circle and standing screw in the exhaust piston by outward inwardly; Sealed core axis body upper end is by middle part bore seal on the O shape circle anti-extrusion ring and the cylinder of living, and sealed core axis body top and hinged top lid join, and the bottom is connected with an end back-moving spring; The oil cylinder upper end is enclosed anti-extrusion ring and is connected steel wire by O shape with the handgrip assembly and is sealedly connected and fixed; The oil cylinder lower end is connected and fixed by being connected steel wire with base body, and uniform several apertures installation Type B seals in border in the base in the base body are by Type B sealing ring, anti-extrusion ring and cylinder seal; The base body inner chamber matches with other end back-moving spring and is connected; Triple-use valve is installed on the sleeve, by stop valve, two-way snap joint or high-pressure rubber pipe elbow in sleeve and the handgrip assembly is linked together, and is fixed by the U-shaped card connection; Auxiliary handle connects, is installed in bottom, the oil cylinder outside by nut, bolt, spring washer; Skate connects, is fixed on the pillar lower bottom pedestal outside by connecting steel wire.
Described triple-use valve is installed on the sleeve, by stop valve, two-way snap joint, be connected with elbow in the handgrip assembly, is installed in the top of handgrip assembly.
Described triple-use valve is installed on the sleeve, is connected with elbow in the handgrip assembly by stop valve, two-way snap joint, is installed in the below of handgrip assembly.
Described triple-use valve is installed on the sleeve, by stop valve, high-pressure rubber pipe, be connected with elbow in the handgrip assembly, is installed in the below of handgrip assembly.
Adopt the form of structure of A type seal in the described handgrip assembly.
Adopt the form of structure of Type B seal in the described base body.
The form of structure that three functions are integrated will be dismantled, be installed, seal to described sealed core axis body.
Described outlet valve is installed in the middle of the connecting axle of cylinder alive top, and installation direction is by outward inwardly;
Auxiliary handle is installed in described lateral surface bottom at oil cylinder.
Skate is dressed in described prop liner body bottom.
The utility model development based on inheritance has also enlarged advantage, the advantage of prior art, in conjunction with the defective of its weak point and existence, has further carried out optimal design and innovation again.Guarantee that properties of product are stable, on the basis of safety, reliable, versatility, gain in strength, simplified structure enlarges the pillar impulse stroke, pillar need not be inverted or be kept flat the problem of exhaust when having solved pillar fluid injection first, further enlarge the accommodation function of pillar supporting.Skate can be dressed according to down-hole base plate situation in the utility model pillar bottom.Demonstrated fully the utility model novel structure, rationally, the intensity height, easy to use, loading and unloading are quick, and adaptable characteristics have alleviated labor strength, prolong pillar application life, make things convenient for organization and management.Guarantee that properties of product are stable, safety, reliable.
Description of drawings
Fig. 1 model is the front view of DW06-22GQX type high-tenacity total travel suspension hydraulic prop
Fig. 2 model is the front view of DW25-31.5GQX type high-tenacity total travel suspension hydraulic prop
Fig. 3 model is the front view of DW35-45GQX type high-tenacity total travel suspension hydraulic prop
Fig. 4 is the front view that sealed core axis body of the present utility model (2) amplifies
The front view that Fig. 5 amplifies for the utility model cylinder alive (3)
Fig. 6 is handgrip assembly (4) and triple-use valve (a 27) installation position enlarged front view in the DW06-22GQX type for the utility model model
Fig. 7 is handgrip assembly (4) and triple-use valve (a 27) installation position enlarged front view in the DW25-31.5GQX type for the utility model model
Fig. 8 is handgrip assembly (4) and triple-use valve (a 27) installation position enlarged front view in the DW35-45GQX type for the utility model model
Fig. 9 is the front view that auxiliary handle (15) amplifies
Figure 10 is the front view that sleeve (26) amplifies
Figure 11 is the front view that skate (28) amplifies
Figure 12 is the front view that base body (11) amplifies
Figure 13 is the front view that outlet valve (52) amplifies.
The specific embodiment
As Fig. 1～shown in Figure 13, the utility model by: hinged top lid 1, sealed core axis body 2, the cylinder 3 of living, handgrip assembly 4, oil cylinder 5, back-moving spring 6, reinforce fairlead 8, base body 11, auxiliary handle 15, elastic cylindrical pin 22, stop valve 24, two-way snap joint 25a or high-pressure rubber pipe 25b, sleeve 26, triple-use valve 27, skate 28, A RunddichtringO 18, Type B sealing ring 48, outlet valve 52 and connect several major parts such as steel wire, O shape circle, anti-extrusion ring, guide ring, dust ring, U type card 23 and form.Hinged top lid 1 is connected and fixed by elastic cylindrical pin 22 with the connecting axle 34 on cylinder 3 tops of living; The cylinder 3 of living is made up of plunger tube 35 and connecting axle 34; Handgrip assembly 4 is installed at cylinder alive 3 middle parts, by the fairlead 37 that has several apertures in the handgrip assembly 4 the A RunddichtringO 18 and cylinder 3 sealings of living are installed, the direct sealings that match with sealed core axis body 2 in the middle of the cylinder 3 top connecting axles 34 alive, cylinder 3 bottoms of living are connected and fixed by being connected steel wire 7 with reinforcing fairlead 8; Reinforce uniform several apertures in fairlead 8 borders, reinforce fairlead 8 and slide up and down at oil cylinder 5 inner chambers in company with the cylinder 3 of living; Outlet valve 52 is made up of exhaust piston 54 and standing screw 53; Outlet valve 52 is installed in the middle of the cylinder 3 top connecting axles 34 alive, and installation direction seals, is connected, fixes with the cylinder 3 top connecting axles 34 of living by O shape circle 55 and standing screw 53 in the exhaust piston 54 by outward inwardly; Middle part bore seal on 31 anti-extrusion rings 32 and the cylinder 3 of living is enclosed by O shape in sealed core axis body 2 upper ends, and sealed core axis body 2 tops and hinged top lid 1 join, and a bottom and an end back-moving spring 6 are connected and fixed; Oil cylinder 5 upper ends are enclosed 13 anti-extrusion rings 14 and are connected steel wire 17 by O shape with handgrip assembly 4 and are sealedly connected and fixed; Oil cylinder 5 lower ends are connected and fixed by being connected steel wire 12 with base body 11, and uniform several apertures installation Type B seals in border in the base 50 in the base body 11 are by Type B sealing ring 48, anti-extrusion ring 49 and cylinder seal; Base body 11 inner chambers match with other end back-moving spring 6 and are connected and fixed; Triple-use valve 27 is installed on the sleeve 26, by stop valve 24, two-way snap joint 25a or high-pressure rubber pipe 25b elbow 38 in sleeve 26 and the handgrip assembly 4 is linked together, and is connected and fixed by U-shaped card 23; Auxiliary handle 15 connects, is fixedly mounted on bottom, oil cylinder 5 outside by nut 41, bolt 42, spring washer 43; Skate 28 connects, is fixed on pillar lower bottom pedestal 11 outsides by connecting steel wire 29.
As shown in Figure 1, triple-use valve 27 is installed on the sleeve 26, by stop valve 24, two-way snap joint 25a, be connected with elbow 38 in the handgrip assembly 4, is installed in the top of handgrip assembly 4.
As shown in Figure 2, triple-use valve 27 is installed on the sleeve 26, is connected with elbow 38 in the handgrip assembly 4 by stop valve 24, two-way snap joint 25a, is installed in the below of handgrip assembly 4.
As shown in Figure 3, triple-use valve 27 is installed on the sleeve 26, by stop valve 24, high-pressure rubber pipe 25b, be connected with elbow 38 in the handgrip assembly 4, is installed in the below of handgrip assembly 4.
One. form of structure, the characteristics of the utility model DW06～45GQX type hydraulic prop are as follows:
1.DW06-22GQX the front view of type high-tenacity total travel suspension outside injection type hydraulic pillar is seen Fig. 1;
The front view of DW25-31.5GQX type high-tenacity total travel suspension outside injection type hydraulic pillar is seen Fig. 2;
The front view of DW35-45GQX type high-tenacity total travel suspension outside injection type hydraulic pillar is seen Fig. 3;
1) triple-use valve 27 is installed on the sleeve 26 in the utility model hydraulic prop, is to link together by elbow 38 in stop valve 24, two-way snap joint 25a or high-pressure rubber pipe 25b and the handgrip assembly 4, is fixed by U-shaped card 23.The fluid injection of triple-use valve 27 highly can not raise along with the rising of the cylinder 3 of living during fluid injection, and is easy to operate, safe and reliable.
2) the utility model hydraulic prop is along with specification, the model difference of pillar, and promptly the minimum constructive height of pillar does not wait, and has taked the artificial form of structure that increases or reduce, to regulate the way of triple-use valve 27 fluid injections height.When pillar height during at 600～2200mm, because the minimum constructive height of pillar is less, cause triple-use valve 27 fluid injections highly on the low side, taked the mode that increases.Be about to the top that triple-use valve 27 positions are installed in handgrip assembly 4, as Fig. 1.When pillar height during at 2500～3150mm, the minimum constructive height of pillar begins to uprise, and the fluid injection of triple-use valve 27 is highly higher, has taked the mode that reduces, and is about to the below that triple-use valve 27 positions are installed in handgrip assembly 4, as Fig. 2.When pillar height during at 3500～4500mm, the minimum constructive height of pillar is higher, and the fluid injection of triple-use valve 27 has been taked the method for more down extending, reducing highly also along with higher.Promptly adopt the high-pressure rubber pipe 25b of different length to replace the way of two-way snap joint 25a, highly remain on about the 1500mm scope, as Fig. 3 to guarantee triple-use valve 27 fluid injections.This form of structure has guaranteed that operating personnel are easy to operate, reduces labor intensity, and increases security reliability.
3) the utility model hydraulic prop, when pillar during in the down-hole supporting, live cylinder 3 and oil cylinder 5 have the lap of equivalent length, have guaranteed stable, safety, the reliability of supporting performance.
4) the utility model hydraulic prop, live cylinder 3 and handgrip assembly 4 spacing taked the spacing form of structure of the spacing or spacing wire loop of step 16, guaranteed general, safety, the reliability of supporting performance more.
5) the utility model hydraulic prop is when the supporting of down-hole, and hinged top lid 1 directly cooperates with " articulated roof beam " of down-hole roof supporting, fixes." articulated roof beam " is narrow with the top board contact surface, and coal cinder, spoil on the top board fall easily.The overall exposed parts of triple-use valve 27 installation sites and handgrip assembly 4 is nearer from the pillar body in the utility model hydraulic prop, and guaranteed the intensity of sleeve 26, the spoil, the coal cinder that make triple-use valve 27 be difficult for being fallen by top board damage, injure by a crashing object, have guaranteed safety, the reliability of pillar supporting performance.
6) the utility model hydraulic prop triple-use valve 27 is installed on the sleeve 26, takes the snap joint type of attachment, and is fixing with U type card 23.Guaranteed the supporting sealing performance, and easy to loading and unloading, quick.
7) the utility model hydraulic prop often need carry out the mobile of short distance setting prop, support just, work and unloading plurality of processes and repeat operation in down-hole supporting process.Be not damaged in order to ensure triple-use valve 27, and control pillar intracavity liquid extracorporeal flow, when needs Zhi Zhuchang distance is mobile, under pillar release situation, as long as close stop valve, two-way snap joint 25a or high-pressure rubber pipe 25b, sleeve 26, triple-use valve 27 positions are unloaded, can be reached mobile pillar purpose.And dismounting, installation, convenient transportation, quick, safety, reliable.
8) the utility model hydraulic prop triple-use valve 27 is installed in the form of structure on the sleeve 26, not only guarantees supporting intensity, connects reliably, and can in the horizontal direction of plumb post, carry out left-right rotation according to the instructions for use after the pillar supporting of down-hole.After the pillar supporting, according to the situation and the requirement of work plane, just can keep triple-use valve 27 install towards uniformity.Operation when not only being convenient to the pillar supporting, management, safety, reliable have more been guaranteed the standardization of work plane.
9) live in directly matching in the middle of the cylinder 3 top connecting axles 34 and seal with sealed core axis body 2.Live in the cylinder 3 plunger tube 35 and handgrip assembly 4 by dust ring 21, guide ring 20, A RunddichtringO 18, anti-extrusion ring 19, formed good dust-proof, guiding, sealing effectiveness.This A RunddichtringO 18 is to form with inner support ring and outside anti-extrusion ring 19, not only traditional line contact sealing is become face contact seal, and the liquid of pillar inner chamber is delivered to A RunddichtringO 18 inside by several apertures on the fairlead 37 in the handgrip assembly 4, A RunddichtringO inside is had and the liquid of pillar inner chamber with equal pressure.Sealing circle surface tightly abuts on cylinder 3 external surfaces alive, prevent that post 3 external surface coating come off because pillar is lived in the supporting process, oval, scratch, collide with, distortion such as impaired, the phenomenon that produces the leakage quality problems takes place.This form of structure is utilized its Expansion sealing device, and compensatory automatically, can guarantee the pillar sealing performance, prolongs pillar application life, has guaranteed that pillar is installing process safe, reliability.
10) reinforcing fairlead 8 has been installed guide ring 9 and has been enclosed 10 form of structure with O shape, makes pillar in lifting process, has played guiding and soft contact action.The 8 direct and oil cylinder 5 inwall generation rigidity slips of reinforcing fairlead have been avoided, the phenomenon that causes oil cylinder 5 inwalls to scratch, damage.Reinforce the uniform several apertures in fairlead 8 borders, guaranteed flowing of the interior exocoel liquid of pillar, guarantee pressure equalizing.
11) innovative design of pillar upper end outlet valve, exhaust structure is simple, compact, rationally.Pillar need not be inverted or be kept flat the problem of exhaust when having solved pillar fluid injection first, alleviate labor strength, eliminate potential safety hazard.
12) at the soft situation of down-hole base plate, the utility model hydraulic prop has been taked the form of structure of time wearing skate 28.This form of structure has strengthened the prop liner area, has prevented that pillar from boring the generation of end phenomenon in the supporting process, guarantee pillar supporting safety, reliability.This skate 28 connects, is fixed on the pillar by connecting steel wire 29 simultaneously, and along with the lifting or the support of pillar, this skate 28 also promotes simultaneously or supports.Quick for installation, convenient, flexible, reliable.
13) plunger tube 35 external surface coating are taked conventional composite chromium plating electroplating technology.This composite plating process technical maturity, antiseptic property is good, and the hardness height has prevented the corrosion phenomena of pillar in the supporting process.
14) the utility model hydraulic prop is according to cylinder diameter φ 100mm, φ 110mm, φ 125mm all size series, and various rubber, seal adopt the import rubber seal, also can adopt seals such as F type, E type, flower bud type, drum type.Utilize its face contact seal and compensatory automatically, more guaranteed safety, the reliability of pillar supporting sealing performance.
2. hinged top lid 1 in the utility model hydraulic prop:
1) hinged top lid 1 part adopts " top cover seat board " and " spherical bearing " to assemble.
2) go up the top, angular adjustment coal seam " articulated roof beam " on plane and the support supporting angle of pillar in the utilization " spherical bearing ", make pillar reach optimum state the supporting of roof.
3. the front view that sealed core axis body 2 amplifies in the utility model hydraulic prop is seen Fig. 4:
1) sealed core axis body 2 is welded by hook 33 on mandrel body 30 bottoms and the spring.The middle part has been installed O shape circle 31 and anti-extrusion ring 32 again.
2) connecting axle 34 forms the sealing device structure forms in the O shape circle 31 of sealed core axis body 2 middle parts installation and anti-extrusion ring 32 and the cylinder 3 of living.This hermetically-sealed construction form is to adopt the seal with O ring apparatus structure form of φ 42mm, replaced in the existing various pillars, top plunger tube inner chamber adopts the seal with O ring apparatus structure form of φ 80mm, has reduced sealing area, has guaranteed the sealing performance of pillar supporting.
3) sealed core axis body 2 upper ends directly contact with hinged top lid 1 inner surface, pillar inner chamber partially liq pressure is directly delivered on hinged top lid 1 inner surface by sealed core axis body 2, active area is big, pressure on the unit area is little, has guaranteed the supporting intensity and the security reliability of pillar more.
4) connecting axle 34 adopts the step stopping means in sealed core axis body 2 bottoms and the cylinder 3 of living, and has prevented that sealed core axis body 2 under back-moving spring 6 tension, entering into the possibility of cylinder 3 inner chambers alive.Guaranteed the supporting performance of pillar.
5) sealed core axis body 2 will be dismantled, install, seals three functions and be integrated, and simplified structure is easy to operate, and has kept good universal performance.
4. the front view that the cylinder 3 of living in the utility model hydraulic prop amplifies is seen Fig. 5:
1) cylinder 3 tops of living are welded by plunger tube 35 and connecting axle 34.Adopting this welded structure form, is because the welding position is to be in post top portion, and the break position is not prone to the weld cracking phenomenon on occupying, and weld strength herein can be guaranteed the supporting intensity of pillar fully.
2) the cylinder 3 top connecting axles 34 of living directly contact with hinged top lid 1, and pillar inner chamber fluid pressure is directly delivered on the hinged top lid 1 by connecting axle 34.The wall thickness of connecting axle 34 is greater than the wall thickness of plunger tube 35, so this structure strengthened the pillar upper strength, improved safety, reliability during pillar uses.
3) connecting axle 34 wall thickness intensity height for design, outlet valve 52 is installed abundance and necessary conditions are provided, are guaranteed more and have been improved safety, reliability during pillar uses.
4) live cylinder 3 bottom plunger tubes 35 with reinforce fairlead 8 and take to be connected the form of structure that steel wire 7 is formed by connecting.Reinforce the wall thickness of the wall thickness of fairlead 8, so this structure strengthened pillar bottom intensity, improved safety, reliability during pillar uses greater than plunger tube 35.
5) it is little in light weight to reinforce fairlead 8 volumes, and turning, boring are easy to process., Heavy Weight long as direct processing plunger tube 35 volumes, turning, boring processing etc. are all inconvenient.After adopting this structure, simplified the processing technology of plunger tube 35, reduced difficulty of processing, reduced labor intensity.
6) live cylinder 3 adopts the advantage of these structures to be: guaranteeing under the situation of column strength that the pillar of similar model under the situation that guarantees pillar maximum height, equal impulse stroke, has shortened the length of plunger tube 34 as far as possible.Promptly reach the length that as far as possible shortens slender axles, reduced and alleviated machining slender shaft length, difficulty.Be convenient to tissue production, guarantee crudy.
5. the front view that amplify handgrip assembly 4 and triple-use valve installation position in the utility model hydraulic prop is seen Fig. 6, Fig. 7, Fig. 8,
1) handgrip assembly 4 parts are welded to form by handle 36 and fairlead 37 and 38 3 at elbow.
2) hole that fairlead 37 communicates with elbow 38 in the handgrip assembly 4 is straight hole and the inclined hole that can directly process on the fairlead 37 outer garden side faces, holes afterwards to weld earlier to be beneficial to processing, and technology is simple, guarantees quality.
3) form of structure of employing A type seal in the handgrip assembly 4.There are several apertures fairlead 37 inboards in the handgrip assembly 4, this form of structure not only becomes face contact seal with traditional line contact sealing, also utilize its Expansion sealing device, and it is compensatory automatically, prevented pillar in the supporting process because of plunger tube 34 external surface coating come off, distortion etc., the phenomenon that produces the leakage quality problems takes place.Can guarantee the pillar sealing performance, prolong pillar application life, guarantee that pillar is installing process safe, reliability.
4) along with the variation of pillar maximum height 600～4500mm, the minimum constructive height of pillar is also followed variation by 400～2500mm.The variation of the highly also corresponding minimum constructive height along with pillar of the fluid injection of triple-use valve 27 and changing.Operate height in order to be beneficial to the underground labour, thus following three kinds of form of structure taked,
When 1. the pillar specification is 600～2200mm, see Fig. 6.
When fairlead 37 welds with elbow 38,, improve the height on triple-use valve 27 center to center distance ground artificially with elbow 38 other end connectors up.Make things convenient for the underground labour to carry out fluid injection, unloading operation.
When 2. the pillar specification is 2500～3150mm, see Fig. 7.
When fairlead 37 welds with elbow 38,, reduce the height on triple-use valve 27 center to center distance ground artificially with elbow 38 other end connectors down.Make things convenient for the underground labour to carry out fluid injection, unloading operation.
When 3. the pillar specification is 3500～4500mm, see Fig. 8.
When fairlead 37 welds with elbow 38, still take elbow 38 other end connectors down, reduce the form of structure of the height on triple-use valve 27 center to center distance ground artificially.When triple-use valve 27 is installed, replace two-way snap joint 25a with the high-pressure rubber pipe 25b of different length, the height on reduction triple-use valve 27 center to center distance ground makes things convenient for the underground labour to carry out fluid injection, unloading operation to about the 1500mm.
6. the front view that base body 11 parts are amplified in the utility model hydraulic prop is seen Figure 12:
1) there are base 50 central interior and spring link 51 to be welded in the base body 11.
2) the spring link 51 that is welded with of base body 11 central interior can freely rotate, and after back-moving spring 6 is connected, during the pillar supporting, is beneficial to and adjusts back-moving spring 6 in the best stress of cylinder 3 inner chambers of living.
3) form of structure of employing Type B seal in the base body 11.The Type B seal is made up of Type B sealing ring 48 and anti-extrusion ring 49.This form of structure is traditional O shape astragal contact seal becoming face contact seal, and the liquid of pillar inner chamber is delivered to Type B sealing ring 48 inside by several apertures on the base 50, and Type B sealing ring inside is had and the liquid of pillar inner chamber with equal pressure.Sealing circle surface tightly abuts on oil cylinder 5 inner chambers, has prevented oil cylinder 5 because of distortion such as ellipse, horn mouths, and the phenomenon that produces the leakage quality problems takes place.This form of structure is utilized its Expansion sealing device, and compensatory automatically, can guarantee the pillar sealing performance, prolongs pillar application life, has guaranteed safety, the reliability of pillar in using.
7. the front view that auxiliary handle 15 amplifies in the utility model hydraulic prop is seen Fig. 9:
1) adopt in two annular semicircle cuffs 39 an annular semicircle cuff and wisp hand 40 to be welded in the auxiliary handle 15.
2) connect by nut 41, bolt 42, spring washer 43, two annular semicircle cuffs 39 in the auxiliary handle 15 are fixed on oil cylinder 5 external diameter bottoms.Be beneficial to the pillar carrying, install, avoided handgrip directly to weld again, cause oil cylinder 5 deformed configurations forms.
8. the front view of the utility model hydraulic prop middle sleeve 26 amplifications is seen Figure 10:
1) sleeve 26 has little joint 44 to be welded with valve cylinder 45.
2) sleeve 26 medium and small joints 44 are by being connected with elbow 38 in the handgrip assembly 4 with stop valve 24, two-way snap joint 25a or high-pressure rubber pipe 25b, and U type card 23 is fixing; Triple-use valve 27 is installed in the valve cylinder 45, and sleeve 26 protection triple-use valves 27 are not damaged, and guarantee safety, the reliability of pillar.
9. the front view that skate 28 amplifies in the utility model hydraulic prop is seen Figure 11:
1) skate 28 is by skate body 46, semicircle cover 47 be connected steel wire 29 and form.
2) cover of the semicircle in the skate 28 47 is two, adopts again to connect steel wire 29 connections, and this structure is dismantled, installed, and is convenient, fast.
3) skate 28 becomes one after installing with pillar, follows pillar simultaneously and moves and move.
10. the front view that outlet valve 52 amplifies in the utility model hydraulic prop is seen Figure 13:
1) outlet valve 52 is made up of exhaust piston 54 and standing screw 53, and outlet valve is installed in the middle part of cylinder 3 top connecting axles 34 alive, and the outlet valve direction is by installing inwardly outward.
2) outlet valve 52 places are installed, are drilled with two holes that communicate anyhow on the connecting axle 34.Cross-drilled hole is installed outlet valve, and vertical core communicates with the pillar inner chamber.
3) on the exhaust piston 54, the O shape circle 55 that leading section diameter garden Zhou Fangxiang installs seals with connecting axle 34.The rear portion is connected and fixed by standing screw 53 and connecting axle 34 again.Exhaust piston 54 and standing screw 53 contact surfaces play cushioning effect by the O shape circle 55 of end face direction in the exhaust piston 54 with standing screw 53, have prevented that standing screw 53 and the loosening phenomenon that connecting axle 34 is connected and fixed the place from taking place.During pillar fluid injection exhaust first, turn on outlet valve 52, pillar utilizes the air specific weight characteristics light than water at the standing upright location status, and pillar inner chamber air passes through the perpendicular through hole of connecting axle 34 and pillar inner chamber, and outside the outlet valve cross-drilled hole is discharged post.This exhaust plant is simple and convenient, and is safe and reliable.
Two, the utility model operating principle:
The working solution that the utility model DWGQX type high-tenacity total travel suspension hydraulic prop uses is supplied with through high-pressure rubber pipe, fluid injection gun by pumping plant in the tunnel.This pillar operating principle comprises setting prop, support just, work and unloading plurality of processes.(1) setting prop process: fluid injection gun is inserted in triple-use valve 27 liquid injection holes, the operation fluid injection gun, highly pressurised liquid is opened triple-use valve 27 one way valve steel balls.Highly pressurised liquid flows into the pillar exocoel, flows into the pillar inner chamber by several apertures of reinforcing in the pillar in the fairlead 8 simultaneously, and the inside and outside chamber of pillar has liquid simultaneously, overcomes the drag effect of back-moving spring 6, and cylinder 3 alive is raise.(2) first support process: after pillar makes metal roof bar be close to face roof, the fluid injection gun shut-down operation.At this moment the inside and outside chamber of pillar has the liquid (fluid pressure is a pumping plant pressure) that pressure equates simultaneously.Pillar gives top board one setting load (is that Φ 100mm is an example with the pillar cylinder diameter).When pumping plant pressure was 15MPa, setting load was 108.5kN; When pumping plant pressure was 20MPa, setting load was 144.7kN.
(3) course of work: along with the propelling of coal-face and the prolongation of support time, face roof sinks, the load that acts on the pillar increases, (with the cylinder diameter is Φ 100 when being increased to the yield load 300kN that designs above pillar, the pillar height is to be example below the 2200mm) time, the highly pressurised liquid in the pillar is opened the safety valve in the triple-use valve liquid spill, chamber pressure reduces, and contracts under the post of living is even; When pillar inner chamber working resistance was lower than 300kN, the safety valve in the pillar cut out, and makes the pillar service load remain at 300kN, so claim the fast constant-resistance type pillar.Pillar is in entire work process, and above-mentioned phenomenon repeats, and pillar is under the constant-resistance condition works, thereby reach the purpose of effective management top board.
(4) uninstall process: will unload handgrip and insert in the triple-use valve 27 right valve cylinder unloading holes, rotate the unloading handgrip, force valve pocket to move axially, thereby open the feather valve in the triple-use valve 27, pillar inner chamber liquid is entered the old man by feather valve, the cylinder 3 of living bounces back under the effect of deadweight and back-moving spring 6, reaches and falls the post purpose.
Three. the utility model DWGQX type high-tenacity total travel suspension hydraulic prop characteristics:
The purpose of the utility model hydraulic prop research and development provides a kind of good seal performance, the security reliability height, and stroke compliance is strong, novel structure, loading and unloading, easy to operate down-hole support apparatus.Solve pillar fluid injection exhausting problem first, prolong pillar supporting application life, can be because of insufficient strength, bending, ellipse, distortion, and cause the generation of accidents such as pillar seal failure, supporting performance be destroyed.It is a kind of stable, safe, reliable, general, high-tenacity total travel suspension novel monomeric hydraulic prop that compliance is good.
1, the utility model hydraulic prop novel structure, reasonable, manufacture simplification, versatility is good.The pillar of equal specification, type guaranteeing the same struts impulse stroke, not influencing under the situation of column intensity alive again, has shortened the length of existing plunger tube.Therefore some problems that overcome as far as possible and avoided the slender axles work in-process to occur easily.Reduce difficulty of processing, reduce cost of production, be convenient to tissue and produce and manage.
2, the sealing mandrel in the utility model hydraulic prop is mounted in the centre of cylinder alive top joint pin.The sealing position has not only kept versatility, but also back-moving spring will be installed, cylinder sealing and disassembling function trisome are one with living.Without any need for the auxiliary process screw, directly employing is simply unloaded holding tool and just the sealed core axis body can be pulled out outside the cylinder alive together with back-moving spring, carries out dismounting.Overcome in the existing pier construction fabrication hole in the time of can't processing resolution stand because of wall is thin, or problems such as the operation trouble that causes because of the screw corrosion, dismounting difficulty.
3, in the hermetically-sealed construction in the utility model hydraulic prop, joint pin is connected with top cover, and thickness is big, has overcome in the existing structure because of the thin yielding problem of wall.Improve the sealing performance of pillar, and prolonged the application life of pillar.
4, in the hermetically-sealed construction in the utility model hydraulic prop, joint pin adopts elastic cylindrical pin to be connected with top cover, has not only improved bonding strength, has thoroughly eliminated because of connecting the steel wire trough diapire approaching, and connects the generation that steel wire is deviate from phenomenon and cause.And, in use, have certain elastic compression to adjust according to it according to the characteristics of elastic cylindrical pin, guaranteed reliability, the safety of DWGQX type high-tenacity total travel suspension post top portion sealing device more.
5, in the hermetically-sealed construction on the utility model hydraulic prop cylinder alive top, the cavity between joint pin and the sealed core axis body when dismounting elastic cylindrical pin is provided, guarantees the condition of enough spatial accommodations.This structure has been guaranteed the disassembling function between top cover and the joint pin.
6, the utility model hydraulic prop post inner chamber alive and exocoel all have the liquid with equal pressure, make the cylinder alive of pillar stressed even, guarantee intensity, and be not fragile, guaranteed the safe, reliable, stable of pillar.
7, the utility model hydraulic prop is the total travel pillar.The pillar of a specification can replace existing five kind DW t shores.Applied widely, can reduce the specification kind of pillar under coal mine, using, be convenient to the management in colliery.Reduced fund input and the management cost of colliery to pillar equipment.
8, the utility model hydraulic prop is easy for operation.At present both at home and abroad pillar all is that the column cap of triple-use valve is welded on the cylinder alive, and when the post of living raise, triple-use valve raise with the rising of post alive, and operating personnel must rise with it, and the operation of triple-use valve is brought great inconvenience.Triple-use valve in the utility model pillar is located on the handgrip assembly, and triple-use valve can not raise with the rising of the post of living during fluid injection.In addition, again according to the minimum constructive height difference of pillar, the position of triple-use valve is located at top, the below of handgrip assembly, the Height Adjustment of triple-use valve is arrived the optimum position of operating personnel's operation, be more conducive to operating personnel's operation, reduce labor intensity, guarantee safety, reliable.
9, the utility model hydraulic prop bend part in the handgrip assembly has been set up stop valve.After closing stop valve, parts such as dismounting triple-use valve, sleeve, the liquid in the inside and outside chamber of post of living all can not outflow.Avoided the damage of triple-use valve in handling process, prolonged a column life, guaranteed that the sealing performance of pillar is reliable, safety.
10, reinforce fairlead wall thickness intensity height, be beneficial to processing; Simultaneously pillar is not in the supporting process, and is yielding, damage.When the cylinder of living comes and goes circulation time at cylinder cavity, because of fairlead play the guiding role, O shape circle contacts with cylinder cavity is soft, prolongs the application life of pillar.
11, outlet valve utilizes the air specific weight characteristics light than water, and is simple in structure, compact, reasonable.When having solved pillar fluid injection first, do not need pillar is inverted or is kept flat the problem of exhaust, alleviated labor strength, eliminated potential safety hazard, guarantee the security reliability of pillar supporting.
12, cartridge outer surface alive takes tinning bronze to add chromed hardened composite plating process in the utility model hydraulic prop.This technology is by 15-20 μ m tin bronze or the bottoming of milky white chromium, and the hard chrome of re-plating 40-50 μ m has the high advantage of good antiseptic property and hardness.This electroplating technology maturation, facts have proved, column, jack at fully mechanized mining supporter have good anticorrosion, anti-wear performance in using, working media can adopt the down-hole neutral water in colliery, guaranteed that working environment and underground water are not contaminated, can satisfy the instructions for use of pillar in the down-hole, be environment-friendly type pillar equipment.
13, the utility model hydraulic prop for personnel in being more conducive to transport to the carrying of pillar with lay, set up auxiliary handle again in the bottom of pillar, for pillar, can carry out two people and carry simultaneously than long size, be convenient to transportation and lay.
14, skate can be dressed according to down-hole base plate situation in the utility model pillar bottom.The specification of skate differs in size, and satisfies down-hole supporting needs fully.Skate is made up of skate body and two semicircle covers, by the connection that connects steel wire pillar and skate is connected as a single entity, and can follow pillar and move together.This structure dismounting, installation, convenient, fast, good stability.
15, A type seal, the Type B seal of the employing of the utility model hydraulic prop.This form of structure becomes face contact seal with traditional line contact sealing, utilizes its Expansion sealing device, and compensatory automatically, can prolong pillar application life, has guaranteed the sealing performance of pillar, has guaranteed stable, the safety of pillar, reliable, compliance more.
16, the part of the utility model hydraulic prop and triple-use valve installation position, the form of structure that has all adopted the snap joint of standard to connect.Not only guaranteed sealing performance and intensity, and quick and easy, standardization level is high.
17, the utility model hydraulic prop, according to the specification difference of pillar, the pillar of the existing equal regulation of whole post weight is in light weight about 10%, and its working resistance, impulse stroke are better than existing pillar again.
18, the utility model hydraulic prop, cylinder diameter according to pillar varies in size, can adopt the form of structure of our factory F type, E type seal or seals such as flower bud type, drum type, utilize its Expansion sealing device, and compensatory automatically, can guarantee sealing performance, prolong pillar application life, reduce the turnover rate of seal, reduce maintenance and maintenance cost.
The utility model hydraulic prop, by facts have proved: this pier construction novelty, reasonable, the supporting intensity height, sealing performance is strong, enabling capabilities is big, the anti-bias load ability is strong, the pillar impulse stroke is big, adaptive capacity good, the scope of application is wide, and is in light weight than the similar model pillar of DW type.Triple-use valve fluid injection height can be adjusted up and down and left-right rotation according to down-hole practical operation demand simultaneously, adapts to the operation height, alleviates labor strength, has also guaranteed the standardization of pillar face timbering.Solved the problem that exhaust need not was inverted or keep flat to pillar fluid injection first.Not only easy installation and removal of pillar of the present utility model, processing ease prolongs pillar application life, alleviates labor strength, and has more guaranteed stability, safety, reliability, versatility, the compliance of pillar.Have good economic benefit and social benefit.
Claims (10)
1, a kind of high-tenacity total travel suspension outside injection type hydraulic pillar, it is by hinged top lid (1), sealed core axis body (2), cylinder (3) alive, handgrip assembly (4), oil cylinder (5), back-moving spring (6), reinforce fairlead (8), base body (11), auxiliary handle (15), A RunddichtringO (18), Type B sealing ring (48), outlet valve (52), elastic cylindrical pin (22), stop valve (24), two-way snap joint (25a) or high-pressure rubber pipe (25b), sleeve (26), triple-use valve (27), skate (28), and connection steel wire, O shape circle, anti-extrusion ring, guide ring, dust ring, several most compositions such as U type card (23); It is characterized in that: hinged top lid (1) is connected and fixed by elastic cylindrical pin (22) with the connecting axle (34) on cylinder (3) top of living; The cylinder (3) of living is made up of plunger tube (35) and connecting axle (34); Handgrip assembly (4) is installed at cylinder alive (3) middle part, by the fairlead (37) that has several apertures in the handgrip assembly (4) the A RunddichtringO (18) and cylinder (3) sealing of living are installed, the middle sealing that directly matches of cylinder (3) the top connecting axle (34) of living with sealed core axis body (2), cylinder (3) bottom of living is connected and fixed by being connected steel wire (7) with reinforcing fairlead (8); Reinforce uniform several apertures in fairlead (8) border, reinforce fairlead (8) and slide up and down at oil cylinder (5) inner chamber in company with the cylinder (3) of living; Outlet valve (52) is made up of exhaust piston (54) and standing screw (53); Outlet valve (52) is installed in the middle of cylinder alive (3) the top connecting axle (34), and installation direction seals, is connected, fixes with cylinder (3) the top connecting axle (34) of living by O shape circle (55) and standing screw (53) in the exhaust piston (54) by outward inwardly; The middle part bore seal is gone up by O shape circle (31) anti-extrusion ring (32) and the cylinder (3) of living in sealed core axis body (2) upper end, and sealed core axis body (2) top and hinged top lid (1) join, and a bottom and an end back-moving spring (6) are connected and fixed; Oil cylinder (5) upper end is enclosed (13) anti-extrusion ring (14) and is connected steel wire (17) by O shape with handgrip assembly (4) and is sealedly connected and fixed; Oil cylinder (5) lower end is connected and fixed by being connected steel wire (12) with base body (11), and uniform several apertures in the interior border of base (50) are installed the Type B seal in the base body (11), by Type B sealing ring (48), anti-extrusion ring (49) and cylinder seal; Base body (11) inner chamber matches with other end back-moving spring (6) and is connected and fixed; Triple-use valve (27) is installed on the sleeve (26), by stop valve (24), two-way snap joint (25a) or high-pressure rubber pipe (25b) the middle elbow (38) of sleeve (26) and handgrip assembly (4) is linked together, and is connected and fixed by U-shaped card (23); Auxiliary handle (15) connects, is fixedly mounted on bottom, oil cylinder (5) outside by nut (41), bolt (42), spring washer (43); Skate (28) connects, is fixed on pillar lower bottom pedestal (11) outside by connecting steel wire (29).
2, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1, it is characterized in that: described triple-use valve (27) is installed on the sleeve (26), by stop valve (24), two-way snap joint (25a), be connected, be installed in the top of handgrip assembly (4) with elbow (38) in the handgrip assembly (4).
3, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1, it is characterized in that: described triple-use valve (27) is installed on the sleeve (26), be connected with elbow (38) in the handgrip assembly (4) by stop valve (24), two-way snap joint (25a), be installed in the below of handgrip assembly (4).
4, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1, it is characterized in that: described triple-use valve (27) is installed on the sleeve (26), by stop valve (24), high-pressure rubber pipe (25b), be connected, be installed in the below of handgrip assembly (4) with elbow (38) in the handgrip assembly (4).
5, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1 is characterized in that: the form of structure that adopts A type seal in the described handgrip assembly (4).
6, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1 is characterized in that: the form of structure that adopts the Type B seal in the described base body (11).
7, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1, it is characterized in that: the form of structure that three functions are integrated will be dismantled, be installed, seal to described sealed core axis body (2).
8, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1 is characterized in that: described outlet valve (52) is installed in the middle of cylinder alive (3) the top connecting axle (34), and installation direction is by outward inwardly.
9, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1 is characterized in that: auxiliary handle (15) is installed in described lateral surface bottom at oil cylinder (5).
10, high-tenacity total travel suspension outside injection type hydraulic pillar according to claim 1 is characterized in that: described prop liner body (11) bottom, dress skate (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920019274XU CN201358796Y (en) | 2009-02-12 | 2009-02-12 | High-tenacity full-stroke suspending outward injection type individual hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920019274XU CN201358796Y (en) | 2009-02-12 | 2009-02-12 | High-tenacity full-stroke suspending outward injection type individual hydraulic prop |
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| Publication Number | Publication Date |
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| CN201358796Y true CN201358796Y (en) | 2009-12-09 |
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|---|---|---|---|
| CNU200920019274XU Expired - Fee Related CN201358796Y (en) | 2009-02-12 | 2009-02-12 | High-tenacity full-stroke suspending outward injection type individual hydraulic prop |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562708A (en) * | 2010-12-14 | 2012-07-11 | 海洋王照明科技股份有限公司 | Telescopic cylinder and lighting device comprising same |
| CN102852537A (en) * | 2012-09-19 | 2013-01-02 | 上海支护机械设备有限公司 | Nickel-titanium alloy web membrane technology of single hydraulic prop for mine |
| CN106499420A (en) * | 2016-11-03 | 2017-03-15 | 中国矿业大学 | A kind of mechanical type constant-resistance individual prop installation method and erection method |
-
2009
- 2009-02-12 CN CNU200920019274XU patent/CN201358796Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562708A (en) * | 2010-12-14 | 2012-07-11 | 海洋王照明科技股份有限公司 | Telescopic cylinder and lighting device comprising same |
| CN102852537A (en) * | 2012-09-19 | 2013-01-02 | 上海支护机械设备有限公司 | Nickel-titanium alloy web membrane technology of single hydraulic prop for mine |
| CN106499420A (en) * | 2016-11-03 | 2017-03-15 | 中国矿业大学 | A kind of mechanical type constant-resistance individual prop installation method and erection method |
| CN106499420B (en) * | 2016-11-03 | 2019-02-15 | 中国矿业大学 | A kind of mechanically high constant-resistance individual prop installation method and erection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG TAIAN COAL MINING MACHINERY CO., LTD. Free format text: FORMER OWNER: WANG WEIZHU Effective date: 20110613 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 271000 NO. 1, LINGSHAN STREET, HIGH-TECH. ZONE, TAIAN CITY, SHANDONG PROVINCE TO: 271000 NO. 1, LINGSHAN STREET, TAIAN CITY, SHANDONG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110613 Address after: 271000 No. 1, Lingshan Avenue, Tai'an, Shandong Patentee after: SHANDONG TAIAN COAL MINING MACHINERY CO., LTD. Address before: 271000 No. 1 Lingshan street, hi tech Development Zone, Shandong, Tai'an Patentee before: Wang Weizhu |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20170212 |