CN101214734A - Full-automatic hydraulic without excitation building block shaping machine - Google Patents
Full-automatic hydraulic without excitation building block shaping machine Download PDFInfo
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- CN101214734A CN101214734A CNA2007101919174A CN200710191917A CN101214734A CN 101214734 A CN101214734 A CN 101214734A CN A2007101919174 A CNA2007101919174 A CN A2007101919174A CN 200710191917 A CN200710191917 A CN 200710191917A CN 101214734 A CN101214734 A CN 101214734A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
- B30B1/16—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by fluid-pressure means
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Abstract
The invention provides a full automatic hydraulic building block forming machine without shock excitation, which comprises a frame, a workbench, an upper die, a lower die, a mould emptier, a feeding mechanism and a compaction mechanism. The compaction mechanism comprises a hydraulic cylinder, a hydraulic cylinder push frame, a bar chain force increasing and pressurizing mechanism. The hydraulic cylinder arranged on the frame passes through the frame; the lower end of the hydraulic cylinder is provided with the hydraulic cylinder push frame which is fixed. The lower end of the hydraulic cylinder push frame is provided with the bar chain force increasing and pressurizing mechanism. The lower end of the bar chain force increasing pressurizing mechanism is fixed with an upper templet. The invention provides a full automatic hydraulic forming machine of low power and large pressure without shock excitation, noise or a carrier for high strength bearing building blocks and interlocking building blocks.
Description
Technical field
The present invention relates to a kind of make-up machine, relate in particular to a kind of full-automatic hydraulic without excitation building block shaping machine.
Background technology
China is the big producing country of clay solid brick in the world, and about 6,000 hundred million of annual production is higher than other any countries and regions far away.The production of clay solid brick consumes a large amount of land resource and the energy, and environment is polluted; Exterior-wall heat insulation poor performance with the clay solid brick is built by laying bricks or stones also is unfavorable for building energy conservation and environmental protection.China is energy deficiency not only, and it is nervous to plough.Therefore; China greatly develop energy-conservation, connect the novel wall material that soil, profit gave up, protected environment and improves building function; replace the energy consumption height, take up an area of and ruin the clay solid brick of field and building energy conservation difference; have profound historical significance; being the major action that realizes sustainable development, also is the eternal lasting enterprise that benefits the descendants.
Implementing the strategy of sustainable development, strengthen ecological construction and environmental protection, is a fundamental state policy of China.Novel wall material is protection land resource, energy savings, comprehensive utilization of resources, improves the important measures of environment, also is the important content of the strategy of sustainable development.The reform of materials for wall be the development of China building materials the only way, be rapid economic development the pioneer, be the skyscraper ideal material, be the best resource of building energy conservation.
Along with the continuing, develop in a healthy way fast and the variation of consumer market demand of national economy, residential building consumption becomes new consumption hotspot.
Therefore, from the development trend and the policy of country, be well worth doing in the market of novel wall material.One hand tile will become the leading role of following building materials market development.
So develop this type of machine replace with platform shake and the shake building block machine meaning of moulding of mould very great.
At present, all adopt mould make-up machine and the platform make-up machine two big classes of shaking of shaking both at home and abroad, its advantage is: ripe type, adopt wide.
Its shortcoming is as follows:
1. this type of make-up machine power of motor is big, and (average 45KW-200KW) energy loss greatly causes energy waste.
2. excited frequency height is so be easy to cause equipment and mould to damage the fault rate height.
3. so adopt very ambassador's entreprise cost increase of supporting plate exciting production and turnover loss (year ten thousand yuan/platform of consumption 20-40).
4. cloth is very difficult, crosses (reason: the moisture content height) so the exciting of being eager to excel just can be finished cloth.
5. product density is low, and shrinkage factor is big, and the physical dimension variation is big, easy to crack, is difficult for transportation, can not make bearing building block.
6. product strength hangs down not bearing building block.
Summary of the invention
The objective of the invention is provides a kind of no exciting in order to overcome above-mentioned weak point of the prior art, noiseless, no supporting plate, low-power, the high strength bearing building block of big pressure and the full-automatic hydraulic without excitation building block shaping machine of chained block.
The object of the present invention is achieved like this: a kind of full-automatic hydraulic without excitation building block shaping machine; comprise frame, workbench, upper die and lower die, mould emptier and feed mechanism; it is characterized in that also comprising system for compacting; described system for compacting comprises that hydraulic cylinder, hydraulic cylinder push away frame, chain bar tension booster body; the frame central position is provided with hydraulic cylinder; the lower end that described hydraulic cylinder passes frame and hydraulic cylinder is fixed with hydraulic cylinder and pushes away frame, and hydraulic cylinder pushes away between frame and the patrix and is connected and fixed by chain bar tension booster body.
Described chain bar tension booster body comprises crank, cochain bar and following chain bar, the lower end of the upper end of cochain bar and following chain bar is fixed with upper rack and last die tip pin joint respectively, the other end of cochain bar and following chain bar is connected through the hinge fixing, and two ends push away frame with hydraulic cylinder respectively and the cochain lever pin connects fixing about the crank.
Also be provided with load-carrying Height Adjustment mechanism between described counterdie and the frame, described load-carrying adjustment highly mechanism comprises mobile base, gearbox and adjusting wedge, reciprocal hydraulic cylinder and following model fixing seat, described its mobile base two ends are provided with gearbox, mobile base is provided with wedge-shape notch, the lower surface of adjusting wedge and recess shape shape are coincide and the lower surface of adjusting wedge falls in the recess of mobile base, the upper surface of adjusting wedge is fixed with down model fixing seat and fixedlys connected with counterdie, and mobile base and adjusting wedge center are equipped with reciprocal hydraulic cylinder.
Described patrix comprises cope match-plate pattern and the last die head of fixing with the cope match-plate pattern lower end, and the upper surface of cope match-plate pattern is fixed with the lower end of following chain bar; Described counterdie comprises core rod and die cavity, and die cavity is corresponding with last die head position; Described mould emptier comprises stripper plate, mould bases seat, core rod connecting plate, demoulding push rod, demoulding push rod connecting plate; this stripper plate is positioned at die cavity and is fixed on the demoulding push rod; demoulding push rod lower end and demoulding push rod connecting plate are fixed; the core rod lower end is fixed with the core rod connecting plate, and core rod connecting plate side is fixed by the fixing mould bases seat in following model fixing seat upper end.
Described reciprocal hydraulic cylinder comprises outer shell axle and the inner casing axle in the cylinder body, and the top of inner casing axle and demoulding push rod connecting plate are fixed, and the bottom of outer shell axle and inner casing axle is respectively equipped with oiler.
Described hydraulic cylinder comprises a main hydraulic cylinder and two rapid movement hydraulic cylinders, and its main hydraulic cylinder is positioned at the center, and two rapid movement hydraulic cylinders are positioned at the main hydraulic cylinder both sides.
The described die cavity outside and stationary table are fixed by the table surface height adjuster between workbench and the frame.
Described feed mechanism comprises feeding cam mechanism, cloth truck, cloth truck crank arm push rod, feed storehouse, cloth Car Track and push pedal, its feeding cam mechanism is positioned at the frame upper surface and is connected with cloth truck on the work top by the cloth truck push rod of cranking arm, the work tablecloth is provided with cloth Car Track and cloth parking stall on the cloth Car Track, cloth truck front end is provided with push pedal, cloth truck top vertically is provided with and the fixing feed storehouse of frame, and the feed storehouse is provided with the feed bin crop control plate.
The invention has the advantages that:
1. building block product compression strength is good, apparent size standard, product quality height.Briquetting pressure reaches 2000 tons/square metre, and compression strength height, discreteness are little, and quality reaches " architectural design of concrete hollow building-block and construction regulations ", " JGJ14-82 ", " GB82390-87 " national standard fully.
2.PLC automation control.Operating personnel can freely select manual, Automatic Control according to the condition of production needs during production.And can be according to different materials, different product is required, rewrites the computer parameter at any time and need not professional, special equipment.
3. hydraulic drive.Adopt the hydraulic pressure extrusion forming process, compact conformation, easy to maintenance, good reliability.
4. more mold exchange is convenient.A tractor serves several purposes can the production building block, again can production floor tile decorative block etc.
5. the goods kind is various.Produce the another set of corresponding charging mechanism of increase in demand of goods such as decorative color building block, floor tile lattice according to the user, make this serial building block machine bring into play perfect functions more.
6. realize no supporting plate automated production.The annual supporting plate consumptive material that can reduce about 200,000 yuan.
7. conservation of power energy consumption.Power of motor only is 7.5KW, and machine is more than the 22KW and same levels is shaken, and energy-saving benefit is considerable.
8. automaticity height.Article one, the line operating personnel only need 5 people, save manpower than other production lines.
9. saving cement consumption.Because be the hydraulic pressure extrusion molding, 8% cement consumption is enough to guarantee the closely knit and intensity of building block.
Description of drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a left view of the present invention;
Fig. 3 is the partial enlarged drawing of Fig. 1;
Structural representation when Fig. 4 is consolidated structure compacting of the present invention;
Fig. 5 is work operation step preface figure of the present invention;
Fig. 6 is the structural representation of reciprocal hydraulic cylinder of the present invention.
Among the figure: 1, frame; 2, workbench; 3, cope match-plate pattern; 4, hydraulic cylinder pushes away frame; 5, crank; 6, cochain bar; 7, following chain bar; 8, mobile base; 9, adjusting wedge; 10, reciprocal hydraulic cylinder; 11, following model fixing seat; 12, main hydraulic cylinder; 13, rapid movement hydraulic cylinder; 14, table surface height adjuster; 15, feeding cam mechanism; 16, cloth truck; 17, the cloth truck push rod of cranking arm; 18, feed storehouse; 19 cloth Car Tracks; 20, push pedal; 21, feed bin crop control plate; 22, gearbox; 23, go up die head; 24, core rod; 25, die cavity; 26, stripper plate; 27, mould bases seat; 28, core rod connecting plate; 29, demoulding push rod; 30, demoulding push rod connecting plate; 31, outer shell axle; 32, inner casing axle.
The specific embodiment
Accompanying drawing is non-limiting to disclose a specific embodiment of the present invention, and the invention will be further described below in conjunction with accompanying drawing.
By Fig. 1, Fig. 2 as seen, a kind of full-automatic hydraulic without excitation building block shaping machine, comprise frame 1, workbench 2, upper die and lower die, mould emptier, feed mechanism, system for compacting and load-carrying height mechanism, described system for compacting comprises that main hydraulic cylinder 12, two rapid movement hydraulic cylinders 13, hydraulic cylinders push away frame 4, chain bar tension booster body, its main hydraulic cylinder 12 is positioned at the center of frame, two rapid movement hydraulic cylinders 13 are positioned at main hydraulic cylinder 12 both sides, and main hydraulic cylinder 12 and two rapid movement hydraulic cylinders 13 pass frame 1 and lower end and are fixed with hydraulic cylinder and push away frame 4; Chain bar tension booster body comprises crank 5, cochain bar 6 and following chain bar 7, the lower end of the upper end of cochain bar 6 and following chain bar 7 is fixed with frame 1 and cope match-plate pattern 3 pin joints respectively, it is fixing to be connected through the hinge between cochain bar 6 and the following chain bar 7, and crank pushes away frame 4 with hydraulic cylinder respectively and cochain bar 6 pin joints are fixed in two ends about in the of 5; Described load-carrying highly mechanism comprises mobile base 8, adjusting wedge 9, reciprocal hydraulic cylinder 10 and following model fixing seat 11, its mobile base 8 two ends are provided with gearbox 22, regulate the load-carrying height by gearbox to reach, mobile base 8 is provided with the lower surface shape of wedge-shape notch and recess shape and adjusting wedge 9 and coincide, the lower surface of adjusting wedge 9 falls in the recess of mobile base 8, the upper surface of adjusting wedge 9 is fixed with down model fixing seat 11 and fixedlys connected with lower bolster, and mobile base 8 is equipped with reciprocal hydraulic cylinder 10 with adjusting wedge 9 centers; Patrix comprises the fixing last die head 23 of cope match-plate pattern 3 and cope match-plate pattern 3 lower ends, and the lower end of chain bar 7 is fixed under cope match-plate pattern 3 upper surfaces; Described counterdie comprises core rod 24 and die cavity 25, and last die head 23 is corresponding with die cavity 25 positions, and die cavity 25 outsides and workbench 2 are fixing, and is fixing by table surface height adjuster 14 between workbench 2 and the frame 1, to reach the height of adjusting workbench and die cavity; Described mould emptier comprises stripper plate 26, mould bases seat 27, core rod connecting plate 28, demoulding push rod 29, demoulding push rod connecting plate 30, this stripper plate 26 is positioned at die cavity 25 and is fixed on the demoulding push rod 29, demoulding push rod 29 lower ends and demoulding push rod connecting plate 30 are fixing, core rod 24 lower ends are fixed with core rod connecting plate 28, and the mould bases seat 27 of model fixing seat 11 upper ends was fixing under core rod connecting plate 28 sides were passed through; Its reciprocal hydraulic cylinder 10 comprises outer shell axle 31 and the inner casing axle 32 in the cylinder body, and the top of outer shell axle 31 and adjusting wedge 9 are fixing, and the top of inner casing axle 32 and demoulding push rod connecting plate 30 are fixing.
Described feed mechanism comprises feeding cam mechanism 15, cloth truck 16, cloth truck crank arm push rod 17, feed storehouse 18, cloth Car Track 19 and push pedal 20, its feeding cam mechanism 15 is positioned at the cloth truck 16 of cranking arm on 2 of push rod 17 and the workbench by the cloth truck on frame 1 top and is connected, workbench 2 cloth are provided with cloth Car Track 19 and cloth truck 16 is positioned on the cloth Car Track 19, cloth truck 16 front ends are provided with push pedal 20, cloth truck 16 tops are provided with the feed storehouse of fixing with frame 1 18, and feed storehouse 18 is provided with feed bin crop control plate 21.
Operating procedure:
At first adjust mould (containing mould emptier), 2 of workbench, load-carrying governor motion.It is reinforced under feed storehouse 18 that the initial bit that powers on (initial point) adds truck, and cope match-plate pattern 3 is topmost, and core rod 24 upper surfaces, the supporting plate plane of counterdie are equal with die cavity 25 upper ends, and this moment, they all were horizontal with workbench 2 table tops.It is reinforced to open feed storehouse 18 doors, cloth truck 16 material completely back travel forward under the effect of top cam feed structure, cloth truck 16 front ends are equipped with plastic cement discharging push pedal 20, presswork is released in push pedal 20, finished product drops on the discharging steel plate and is sent to the side by discharging steel plate conveyer, this moment, truck center and counterdie center were on same vertical line, back and forth hydraulic cylinder 10 inner casing axles 32 tops are oil-filled, outer shell axle 31 and inner casing axle 32 bottom discharges, hydraulic cylinder inner casing axle 32 drives core rod 24, stripper plate 26, core rod connecting plate 28, demoulding push rod 29, demoulding push rod connecting plate 30 drops to the appropriate location, bottom together, this moment the dolly material fall framed in, back and forth hydraulic cylinder 10 inner casings bottom is oil-filled, inner casing axle 32 drives core rod connecting plate 28 and core rod 24 rises to the bonding part at 1-2 in second, cloth truck 16 moves back and forth 2 ~ 3 times at die cavity 25 tops, it is reinforced to return to cloth truck 16 initial positions, when cloth truck 16 is got back to initial point the clout of die cavity 25 tops scraped and take back cloth truck 16 clearly, follow down rapid movement of two rapid movement hydraulic cylinders 13, driving main hydraulic cylinder 12 simultaneously, to move downward main hydraulic cylinder 12 siphons this moment oil-filled, the crank that also drives chain bar tension booster body simultaneously drives cochain bar 6 and opens gradually downwards with following chain bar 7, when last die head 23 touches main hydraulic cylinder 12 startup pressurizations in precompressed time-delay back behind the material in the die cavity 25, this moment, main hydraulic cylinder 12 and two rapid movement hydraulic cylinders 13 were worked simultaneously, pressurization along with main hydraulic cylinder 12 and two rapid movement hydraulic cylinders 13, chain bar tension booster body pressure begins to increase gradually, be set to type up to pressure, two rapid movement hydraulic cylinders, 13 drive main hydraulic cylinders 12 and chain bar tension booster body upwards move to patrix fast topmost after the pressurize, this moment, taxes and profits hydraulic cylinder outer shell started, outer shell axle 31 drives stripper plate 26, demoulding push rod 29, demoulding push rod connecting plate 30 moves upward, product is ejected from die cavity 25, to with die cavity 25 end faces mutually mean place stop, when treating feeding trolley product is ejected, then carry out next working cycles feeding.
Claims (8)
1. full-automatic hydraulic without excitation building block shaping machine; comprise frame, workbench, upper die and lower die, mould emptier and feed mechanism; it is characterized in that also comprising system for compacting; described system for compacting comprises that hydraulic cylinder, hydraulic cylinder push away frame, chain bar tension booster body; the frame central position is provided with hydraulic cylinder; the lower end that described hydraulic cylinder passes frame and hydraulic cylinder is fixed with hydraulic cylinder and pushes away frame, and hydraulic cylinder pushes away between frame and the patrix and is connected and fixed by chain bar tension booster body.
2. full-automatic hydraulic without excitation building block shaping machine according to claim 1, it is characterized in that described chain bar tension booster body comprises crank, cochain bar and following chain bar, the lower end of the upper end of cochain bar and following chain bar is fixed with upper rack and last die tip pin joint respectively, the other end of cochain bar and following chain bar is connected through the hinge fixing, and two ends push away frame with hydraulic cylinder respectively and the cochain lever pin connects fixing about the crank.
3. full-automatic hydraulic without excitation building block shaping machine according to claim 1 and 2, it is characterized in that also being provided with between described counterdie and the frame load-carrying Height Adjustment mechanism, described load-carrying adjustment highly mechanism comprises mobile base, gearbox and adjusting wedge, reciprocal hydraulic cylinder and following model fixing seat, described its mobile base two ends are provided with gearbox, mobile base is provided with wedge-shape notch, the lower surface of adjusting wedge and recess shape shape are coincide and the lower surface of adjusting wedge falls in the recess of mobile base, the upper surface of adjusting wedge is fixed with down model fixing seat and fixedlys connected with counterdie, and mobile base and adjusting wedge center are equipped with reciprocal hydraulic cylinder.
4. full-automatic hydraulic without excitation building block shaping machine according to claim 3 is characterized in that described patrix comprises cope match-plate pattern and the last die head of fixing with the cope match-plate pattern lower end, and the upper surface of cope match-plate pattern is fixed with the lower end of following chain bar; Described counterdie comprises core rod and die cavity, and die cavity is corresponding with last die head position; Described mould emptier comprises stripper plate, mould bases seat, core rod connecting plate, demoulding push rod, demoulding push rod connecting plate; this stripper plate is positioned at die cavity and is fixed on the demoulding push rod; demoulding push rod lower end and demoulding push rod connecting plate are fixed; the core rod lower end is fixed with the core rod connecting plate, and core rod connecting plate side is fixed by the fixing mould bases seat in following model fixing seat upper end.
5. full-automatic hydraulic without excitation building block shaping machine according to claim 4, it is characterized in that described reciprocal hydraulic cylinder comprises outer shell axle and the inner casing axle in the cylinder body, the top of inner casing axle and demoulding push rod connecting plate are fixed, and the bottom of outer shell axle and inner casing axle is respectively equipped with oiler.
6. full-automatic hydraulic without excitation building block shaping machine according to claim 5, it is characterized in that described hydraulic cylinder comprises a main hydraulic cylinder and two rapid movement hydraulic cylinders, its main hydraulic cylinder is positioned at the center, and two rapid movement hydraulic cylinders are positioned at the main hydraulic cylinder both sides.
7. full-automatic hydraulic without excitation building block shaping machine according to claim 6 is characterized in that the described die cavity outside and stationary table, fixes by the table surface height adjuster between workbench and the frame.
8. full-automatic hydraulic without excitation building block shaping machine according to claim 7, it is characterized in that described feed mechanism comprises feeding cam mechanism, cloth truck, cloth truck crank arm push rod, feed storehouse, cloth Car Track and push pedal, its feeding cam mechanism is positioned at the frame upper surface and is connected with cloth truck on the work top by the cloth truck push rod of cranking arm, the work tablecloth is provided with cloth Car Track and cloth parking stall on the cloth Car Track, cloth truck front end is provided with push pedal, cloth truck top vertically is provided with and the fixing feed storehouse of frame, and the feed storehouse is provided with the feed bin crop control plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101919174A CN101214734A (en) | 2007-12-27 | 2007-12-27 | Full-automatic hydraulic without excitation building block shaping machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101919174A CN101214734A (en) | 2007-12-27 | 2007-12-27 | Full-automatic hydraulic without excitation building block shaping machine |
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| CN101214734A true CN101214734A (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101919174A Pending CN101214734A (en) | 2007-12-27 | 2007-12-27 | Full-automatic hydraulic without excitation building block shaping machine |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101554747B (en) * | 2009-05-26 | 2010-12-29 | 南阳天意保温耐火材料有限公司 | Inorganic light weight thermal insulation wall tile forming machine and forming method |
| CN102120367A (en) * | 2010-12-28 | 2011-07-13 | 平顶山市通运矿山机械厂 | Automatic hydraulic molding machine for pulverized coal |
| CN102229183A (en) * | 2011-05-17 | 2011-11-02 | 安培 | Curing building block forming machine |
| CN102312086A (en) * | 2010-07-05 | 2012-01-11 | 邢钟鹤 | Iron ore powder balling equipment |
| CN102601853A (en) * | 2012-04-05 | 2012-07-25 | 刘发清 | Block making machine, molding mould plate easy to demould and variable-thickness plate |
| CN105082592A (en) * | 2015-08-31 | 2015-11-25 | 西安交通大学 | Rapid-idling slow-pressurizing main motor horizontal moving type servo press with symmetrical toggle rods |
| CN107672218A (en) * | 2017-09-21 | 2018-02-09 | 马鞍山市广源法兰环件有限公司 | A kind of annulus part processing mold |
| CN112960412A (en) * | 2021-02-10 | 2021-06-15 | 贝健军 | Adjustable feeding device for water conservancy and hydropower construction and use method |
-
2007
- 2007-12-27 CN CNA2007101919174A patent/CN101214734A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101554747B (en) * | 2009-05-26 | 2010-12-29 | 南阳天意保温耐火材料有限公司 | Inorganic light weight thermal insulation wall tile forming machine and forming method |
| CN102312086A (en) * | 2010-07-05 | 2012-01-11 | 邢钟鹤 | Iron ore powder balling equipment |
| CN102312086B (en) * | 2010-07-05 | 2014-12-10 | 山东黄金归来庄矿业有限公司 | Iron ore powder balling equipment |
| CN102120367A (en) * | 2010-12-28 | 2011-07-13 | 平顶山市通运矿山机械厂 | Automatic hydraulic molding machine for pulverized coal |
| CN102120367B (en) * | 2010-12-28 | 2013-08-28 | 平顶山市通运矿山机械厂 | Automatic hydraulic molding machine for pulverized coal |
| CN102229183A (en) * | 2011-05-17 | 2011-11-02 | 安培 | Curing building block forming machine |
| CN102601853A (en) * | 2012-04-05 | 2012-07-25 | 刘发清 | Block making machine, molding mould plate easy to demould and variable-thickness plate |
| CN105082592A (en) * | 2015-08-31 | 2015-11-25 | 西安交通大学 | Rapid-idling slow-pressurizing main motor horizontal moving type servo press with symmetrical toggle rods |
| CN107672218A (en) * | 2017-09-21 | 2018-02-09 | 马鞍山市广源法兰环件有限公司 | A kind of annulus part processing mold |
| CN112960412A (en) * | 2021-02-10 | 2021-06-15 | 贝健军 | Adjustable feeding device for water conservancy and hydropower construction and use method |
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Open date: 20080709 |