CN107520426B - A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method - Google Patents
A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method Download PDFInfo
- Publication number
- CN107520426B CN107520426B CN201710533193.0A CN201710533193A CN107520426B CN 107520426 B CN107520426 B CN 107520426B CN 201710533193 A CN201710533193 A CN 201710533193A CN 107520426 B CN107520426 B CN 107520426B
- Authority
- CN
- China
- Prior art keywords
- bracket
- wedge
- low pressure
- spandrel girder
- pressure casting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
Abstract
The invention discloses a kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing methods, including bracket, wedge and sensor；Bracket is installed on the ground by wedge, and the sensor for measuring load load is equipped between bracket and wedge.The present invention is by the bracket, effectively having dispersed the load of furnace body receiving, having overcome traditional middle-size and small-size Casting Equipment bearing capacity lower problem furnace body installation；By the cooperation of bracket, wedge and sensor, the exposure level of flexible modulation bracket and table top, solve the problems, such as that traditional middle-size and small-size Casting Equipment air-tightness is weaker.
Description
Technical field
The present invention relates to a kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing methods, are particularly suitable for medium-sized
The low-pressure casting of foundry furnace belongs to smithcraft and casting engineering technical field.
Background technique
Direction with thin-wall complicated casting towards " lightweight ", " precise treatment " is developed, the fields pair such as modern Aviation, space flight
The demand of complex thin wall castings is more and more obvious, these complex thin-wall components have wall is thin, structure is complicated, overall size is big,
Dimensional accuracy is high, internal soundness requires the features such as high.The foundry engieering of large-scale complex thin-wall part has become the modernization of national defense
One of the key technology that should have, currently, low pressure casting has been widely used in casting field, be it is a kind of it is common it is accurate at
Type method is also applied for production large thin-wall intricate casting.And for the enterprise that produces based on medium and small casting, it needs
Gradually to the trend transformation of production large-scaled complex castings.But in the starting stage, enterprise is still to produce medium and small casting as profit pair
As, large-scale and ultra-large type casting can only be used as trial product, and batch is smaller, if newly purchasing matched Casting Equipment, utilization rate is low,
Great amount of cost is caused to overstock；If the bearing capacity of heavy castings is not achieved in furnace body using existing equipment.Therefore, it needs to carry out casting
The research work for making furnace body carrying conversion equipment, formulates a series of design methods and method of calibration, develops a kind of feasibility equipment,
Make existing low pressure casting furnace that can carry out free conversion according to actual needs.
Summary of the invention
Technical problem solved by the present invention is overcome the deficiencies in the prior art, the present invention provides a kind of heavy castings are low
Carrying conversion equipment and its manufacturing method are made in die casting, by the way that furnace body installation in the bracket, has effectively been dispersed the load of furnace body receiving
Lotus overcomes traditional middle-size and small-size lower problem of Casting Equipment bearing capacity；By the cooperation of bracket, wedge and sensor,
The exposure level of flexible modulation bracket and table top solves the problems, such as that traditional middle-size and small-size Casting Equipment air-tightness is weaker.
The technical solution of the invention is as follows:
A kind of heavy castings low pressure casting carrying conversion equipment, including bracket, wedge and sensor；Bracket is pacified by wedge
Dress is equipped with the sensor for measuring load load on the ground, between bracket and wedge.
In a kind of above-mentioned heavy castings low pressure casting carrying conversion equipment, the bracket include spandrel girder, supporting beam,
Column and reinforcing rib；Spandrel girder, supporting beam and column are fashioned iron, and the cross sectional shape of spandrel girder is I-shaped, supporting beam and vertical
The cross sectional shape of column is rectangle, and spandrel girder and supporting beam are mutually perpendicular to and are staggeredly welded on column form frame structure, prop up
It supports beam and column weld is equipped with the reinforcing rib for being used for reinforced structure.
In a kind of above-mentioned heavy castings low pressure casting carrying conversion equipment, the quantity of the spandrel girder and supporting beam is equal
No less than two, the quantity of column is no less than four, and the both ends of a supporting beam are respectively welded at the end of two root posts and more
Root supporting beam is parallel to each other, and spandrel girder is non-coplanar with supporting beam, and more spandrel girders are parallel to each other.
In a kind of above-mentioned heavy castings low pressure casting carrying conversion equipment, the monolithic bearing capacity of the wedge is not small
In two tons, the quantity of wedge is no less than four pieces, and wedge pad is between bracket and ground.
In a kind of above-mentioned heavy castings low pressure casting carrying conversion equipment, the sensor uses CFW/100KN type
Sensor, the quantity of sensor are no less than two, and the middle part of spandrel girder is arranged in sensor.
A kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment, includes the following steps:
The first step is designed a model using low pressure casting principle, further according to furnace body structure size to the structural parameters of model
It is set, selection is then carried out to bracket according to theory of mechanics and is welded, type selecting then is carried out to wedge and sensor；
Wedge is placed on the ground by second step, then the bracket that welding finishes is mounted on wedge, then by sensor
It is mounted between bracket and wedge；
Third step tests heavy castings low pressure casting carrying conversion equipment using low-pressure casting process principle
Card.
In a kind of manufacturing method of above-mentioned heavy castings low pressure casting carrying conversion equipment, in the first step, furnace
Body is placed in the bracket and furnace body is not with cradle fits, and the height of bracket is less than the difference in height of casting table top to ground.
In a kind of manufacturing method of above-mentioned heavy castings low pressure casting carrying conversion equipment, in the first step, branch
The material of frame uses I-steel, channel steel or square steel；
P≥nFmax；
H+Ymax< △ H；
In formula: P indicates that the maximum shear stress of spandrel girder, n indicate safety coefficient, FmaxIndicate maximum, force suffered by spandrel girder, H
Indicate profile depth of section, YmaxIndicate that the maximum defluxion of spandrel girder, △ H indicate on furnace body along the difference in height with edge on crucible；
P=σ0.2×S；
In formula: σ0.2Indicate yield strength, S is the sectional area of profile, σ0.2, S value can pass through " mechanical engineering, special-purpose machinery
Volume two " it checks in；
Ymax=0.0642Mmax l2/EI；
In formula: MmaxIndicate maximum load suffered by spandrel girder, l indicates that load-bearing beam length, E indicate that elasticity modulus, I indicate
Cross sectional moment of inertia；
Mmax=σ0.2×S/4；
In formula: B, H, b, h are profile parameter, can be checked in by " mechanical engineering, special-purpose machinery volume two ".
In a kind of manufacturing method of above-mentioned heavy castings low pressure casting carrying conversion equipment, in the first step, tiltedly
The bearing capacity of iron is greater than the maximum system weight when present apparatus works, and the range of sensor is greater than the maximum when present apparatus works
System weight.
In a kind of manufacturing method of above-mentioned heavy castings low pressure casting carrying conversion equipment, in the third step, test
Card includes the following steps:
Step 3.1, table top is placed on bracket, then places the weight of 3t, 4t, 4.5t, 5t, 6t respectively on table top
Object, with the deflection deformation amount of vernier caliper measurement spandrel girder；
If the deflection deformation amount of spandrel girder is less than 5mm, verified by bearing capacity, if the deflection deformation amount of spandrel girder is not
Less than 5mm, then remanufactures and carry out bearing capacity verifying；
Step 3.2, furnace body is placed in the bracket verified by bearing capacity, then table top is placed on bracket, with
Wedge fine-tuning stent is utilized afterwards, so that bracket and deck contact, are then poured；
If runout phenomenon does not occur for casting process and casting is intact, verified by air-tightness, if casting process is run
Fiery phenomenon or casting the phenomenon that there are large area underprimings, then remanufactures and carries out bearing capacity verifying and air-tightness is tested
Card.
Compared with the prior art, the invention has the advantages that:
[1] present invention has comprehensively considered factory production status and following development trend at this stage, makes large and medium-sized casting can
Existing medium-sized Casting Equipment is shared, it is low in cost, simple and easy, comprehensive strong.
[2] the invention discloses the manufacturing methods of low pressure casting carrying conversion equipment, can mention for the Transformation Development of enterprise
For thinking, the method efficient quick, rationally it is general, the cost input of enterprise can be greatly reduced, saved human and material resources.
[3] production freedom degree of the invention is larger, and factory can be converted according to the specification of casting at any time, has pushed low
Press the far-reaching development of casting field.
[4] compact overall structure of the present invention, integrated level is high, and functional structure realizes the design requirement of simplification, is suitable for
Various working environments, and have longer service life, under complex working condition still can good operation, have it is versatile,
Feature applied widely.
[5] spandrel girder of the invention, column, wedge and sensor dismount flexibly, and easy to repair and replacement, substantially drop
Low production cost, has also obtained corresponding simplification in process flow, has had a vast market application prospect.
Detailed description of the invention
Fig. 1 is structure chart of the invention
Fig. 2 is cross-sectional view of the invention
Fig. 3 is flow chart of the invention
Wherein: 1 bracket；101 spandrel girders；102 supporting beams；103 columns；104 reinforcing ribs；2 wedges；3 sensors；
Specific embodiment
To be illustrated that the solution of the present invention more, explanation and specific embodiment are made the present invention further with reference to the accompanying drawing
Description:
As shown in Fig. 1~2, a kind of heavy castings low pressure casting carrying conversion equipment, including bracket 1, wedge 2 and sensor
3；Bracket 1 is installed on the ground by wedge 2, and the sensor 3 for measuring load load is equipped between bracket 1 and wedge 2.
Preferably, bracket 1 includes spandrel girder 101, supporting beam 102, column 103 and reinforcing rib 104；Spandrel girder 101, support
Beam 102 and column 103 are fashioned iron, and the cross sectional shape of spandrel girder 101 is I-shaped, the section shape of supporting beam 102 and column 103
Shape is rectangle, and spandrel girder 101 and supporting beam 102 are mutually perpendicular to and are staggeredly welded on column 103 form frame structure, support
Beam 102 and 103 weld of column are equipped with the reinforcing rib 104 for reinforced structure.
Preferably, the quantity of spandrel girder 101 and supporting beam 102 is set as two, and the quantity of column 103 is set as four, one
The both ends of supporting beam 102 are respectively welded at the end of two root posts 103 and more supporting beams 102 are parallel to each other, spandrel girder 101 with
Supporting beam 102 is non-coplanar, and more spandrel girders 101 are parallel to each other.
Preferably, the monolithic bearing capacity of wedge 2 is not less than two tons, and the quantity of wedge 2 is set as four pieces, and four pieces of wedges 2 divide
It Dian not be between four columns 103 and ground.
Preferably, sensor 3 uses CFW/100KN type sensor, and the quantity of sensor 3 is set as two, two sensors 3
It is separately positioned on the upper surface middle part of two spandrel girders 101.
As shown in figure 3, a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment, includes the following steps:
The first step is designed a model using low pressure casting principle, further according to furnace body structure size to the structural parameters of model
It is set, selection is then carried out to bracket 1 according to theory of mechanics and is welded, type selecting then is carried out to wedge 2 and sensor 3；
Wedge 2 is placed on the ground by second step, then the bracket 1 that welding finishes is mounted on wedge 2, then will be passed
Sensor 3 is mounted between bracket 1 and wedge 2；
Third step tests heavy castings low pressure casting carrying conversion equipment using low-pressure casting process principle
Card.
Preferably, in the first step, furnace body is placed in bracket 1 and furnace body is not bonded with bracket 1, and the height of bracket 1 is less than
Cast the difference in height of table top to ground.
Preferably, in the first step, the material of bracket 1 uses I-steel, channel steel or square steel；
When carrying out selection to bracket 1, strength check need to meet following condition:
P≥nFmax；
H+Ymax< △ H；
In formula: P indicates that the maximum shear stress of spandrel girder, n indicate safety coefficient, FmaxIndicate maximum, force suffered by spandrel girder, H
Indicate profile depth of section, YmaxIndicate that the maximum defluxion of spandrel girder, △ H indicate on furnace body along the difference in height with edge on crucible；
P=σ0.2×S；
In formula: σ0.2Indicate yield strength, S is the sectional area of profile, σ0.2, S value can pass through " mechanical engineering, special-purpose machinery
Volume two " it checks in；
Ymax=0.0642Mmax l2/EI；
In formula: MmaxIndicate maximum load suffered by spandrel girder, l indicates that load-bearing beam length, E indicate that elasticity modulus, I indicate
Cross sectional moment of inertia；
Mmax=σ0.2×S/4；
In formula: B, H, b, h are profile parameter, can be checked in by " mechanical engineering, special-purpose machinery volume two "
Preferably, in the first step, the bearing capacity of wedge 2 is greater than the maximum system weight when present apparatus works, sensor 3
Range be greater than the present apparatus work when maximum system weight.
Preferably, in third step, verifying includes the following steps:
Step 3.1, table top is placed on bracket 1, then places the weight of 3t, 4t, 4.5t, 5t, 6t respectively on table top
Object, with the deflection deformation amount of vernier caliper measurement spandrel girder；
If the deflection deformation amount of spandrel girder is less than 5mm, verified by bearing capacity, if the deflection deformation amount of spandrel girder is not
Less than 5mm, then remanufactures and carry out bearing capacity verifying；
Step 3.2, furnace body is placed in the bracket 1 verified by bearing capacity, then table top is placed on bracket 1,
Followed by 2 fine-tuning stent 1 of wedge, so that bracket 1 and deck contact, are then poured；
If runout phenomenon does not occur for casting process and casting is intact, verified by air-tightness, if casting process is run
Fiery phenomenon or casting the phenomenon that there are large area underprimings, then remanufactures and carries out bearing capacity verifying and air-tightness is tested
Card.
Embodiment one:
The maximum of the existing furnace body in certain workshop is capable of carrying a load of 3t, is suitable for casting small and medium-sized casting, is now connected to certain large-scale cabin
Section develops task, is computed, and 4.5t will be up to the maximum pressure that furnace body generates by being poured this casting, can not be into using existing furnace body
Row casting.
Determine that the design parameter of bracket is as follows according to the size for casting furnace body and crucible in workshop:
The distance between two spandrel girders 101 L1=1200mm；
The total height H 1=500mm of load carrier；
The distance between two supporting beams 102 L2=1600mm；
The profile that the condition of satisfaction is determined by the control profile list of the above parameter, since I-steel, H profile steel and square steel are unsatisfactory for
H < 100mm, therefore select profile 8# channel steel for making material, consider the stationarity and safety of system, it is symmetrical using two channel steels
Welding forms i-beam structure and uses.
Strength check:
Handbook is looked into, the performance indicator and parameter index of channel steel are as follows:
σ0.2=(177~206) MPa；
E=(172~202) MPa；
I=(BH3-bh3)/12=323cm4；
Safety coefficient n takes 5, maximum, force F suffered by spandrel girdermax=5t, then:
P=σ0.2× S=(36.278~42.22) t > nFmax；
Ymax=0.0642Mmaxl2/ EI=5.9mm；
H+Ymax=80+5.9 < △ H=100mm.
Above-mentioned calculation and check the result shows that, the design and material of the present embodiment selection meet strength check requirement.
Bearing capacity verifying:
Mounting bracket 1, wedge 2 and sensor 3, table top is placed on bracket 1, then placed respectively on table top 3t,
The weight of 4t, 4.5t, 5t, 6t, with the deflection deformation amount of vernier caliper measurement spandrel girder；
Experiment proves that the deflection deformation for measuring spandrel girder 101 is respectively less than 5mm when placing the above weight, by carrying energy
Power verifying.
Air-tightness verifying:
Furnace body is placed in the bracket 1 verified by bearing capacity, then table top is placed on bracket 1, followed by
2 fine-tuning stent 1 of wedge so that bracket 1 and deck contact, while paying attention to observing the reading of sensor 3, when four sensors 3
When reading the sum of is reached unanimity and read equal to table top weight, the adjusting of bracket 1 is appropriate, is then poured；
Experiment proves that casting is intact, does not occur to run away phenomenon in casting process and misrun defect is not present, pass through gas
Close property verifying.
The content being not described in detail in description of the invention is known to the skilled person technology.
Claims (9)
1. a kind of heavy castings low pressure casting carries conversion equipment, it is characterised in that: including bracket (1), wedge (2) and sensor
(3)；Bracket (1) is installed on the ground by wedge (2), is equipped between bracket (1) and wedge (2) for measuring load load
Sensor (3)；
The bracket (1) includes spandrel girder (101), supporting beam (102), column (103) and reinforcing rib (104)；Spandrel girder
(101), supporting beam (102) and column (103) are fashioned iron, and the cross sectional shape of spandrel girder (101) is I-shaped, supporting beam
(102) and the cross sectional shape of column (103) is rectangle, and spandrel girder (101) and supporting beam (102) are mutually perpendicular to and staggeredly weld
Frame structure is formed on column (103), supporting beam (102) and column (103) weld are equipped with the reinforcement for reinforced structure
Muscle (104).
2. a kind of heavy castings low pressure casting according to claim 1 carries conversion equipment, it is characterised in that: the load-bearing
The quantity of beam (101) and supporting beam (102) is no less than two, and the quantity of column (103) is no less than four, a supporting beam
(102) both ends are respectively welded at the end of two root posts (103) and more supporting beams (102) are parallel to each other, spandrel girder (101)
Non-coplanar with supporting beam (102), more spandrel girders (101) are parallel to each other.
3. a kind of heavy castings low pressure casting according to claim 1 carries conversion equipment, it is characterised in that: the wedge
(2) monolithic bearing capacity is not less than two tons, and the quantity of wedge (2) is no less than four pieces, and wedge (2) pads on bracket (1) and ground
Between.
4. a kind of heavy castings low pressure casting according to claim 1 carries conversion equipment, it is characterised in that: the sensing
Device (3) uses CFW/100KN type sensor, and the quantity of sensor (3) is no less than two, and sensor (3) is arranged in spandrel girder
(101) middle part.
5. a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment as described in claim 1, it is characterised in that: packet
Include following steps:
The first step is designed a model using low pressure casting principle, is carried out further according to the structure size of furnace body to the structural parameters of model
Then setting carries out selection to bracket (1) according to theory of mechanics and welds, then selects wedge (2) and sensor (3)
Type；
Wedge (2) is placed on the ground by second step, then the bracket (1) that welding finishes is mounted on wedge (2), then will
Sensor (3) is mounted between bracket (1) and wedge (2)；
Third step verifies heavy castings low pressure casting carrying conversion equipment using low-pressure casting process principle.
6. a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment according to claim 5, feature exist
In: in the first step, furnace body is placed in bracket (1) and furnace body is not bonded with bracket (1), and the height of bracket (1) is less than casting
Make the difference in height of table top to ground.
7. a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment according to claim 5, feature exist
In: in the first step, the material of bracket (1) uses I-steel, channel steel or square steel；
P≥nFmax；
H+Ymax< △ H；
In formula: P indicates that the maximum shear stress of spandrel girder, n indicate safety coefficient, FmaxIndicate maximum, force suffered by spandrel girder, H is indicated
Profile depth of section, YmaxIndicate that the maximum defluxion of spandrel girder, △ H indicate on furnace body along the difference in height with edge on crucible；
P=σ0.2×S；
In formula: σ0.2Indicate yield strength, S is the sectional area of profile；
Ymax=0.0642Mmax l2/EI；
In formula: MmaxIndicate maximum load suffered by spandrel girder, l indicates that load-bearing beam length, E indicate that elasticity modulus, I indicate section
The moment of inertia；
Mmax=σ0.2×S/4；
In formula: B, H, b, h are profile parameter.
8. a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment according to claim 5, feature exist
In: in the first step, the bearing capacity of wedge (2) is greater than the maximum system weight when present apparatus works, the amount of sensor (3)
Journey is greater than the maximum system weight when present apparatus works.
9. a kind of manufacturing method of heavy castings low pressure casting carrying conversion equipment according to claim 5, feature exist
In: in the third step, verifying includes the following steps:
Step 3.1, table top is placed on bracket (1), then places the weight of 3t, 4t, 4.5t, 5t, 6t respectively on table top,
With the deflection deformation amount of vernier caliper measurement spandrel girder；
If the deflection deformation amount of spandrel girder is less than 5mm, verified by bearing capacity, if the deflection deformation amount of spandrel girder is not less than
5mm is then remanufactured and is carried out bearing capacity verifying；
Step 3.2, furnace body is placed in the bracket (1) verified by bearing capacity, then table top is placed on bracket (1),
Followed by wedge (2) fine-tuning stent (1), so that bracket (1) and deck contact, are then poured；
If runout phenomenon does not occur for casting process and casting is intact, verified by air-tightness, if runout occurs for casting process now
As or casting there are large area underprimings the phenomenon that, then remanufacture and carry out bearing capacity verifying and air-tightness verifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533193.0A CN107520426B (en) | 2017-07-03 | 2017-07-03 | A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710533193.0A CN107520426B (en) | 2017-07-03 | 2017-07-03 | A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107520426A CN107520426A (en) | 2017-12-29 |
| CN107520426B true CN107520426B (en) | 2019-09-10 |
Family
ID=60748213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710533193.0A Active CN107520426B (en) | 2017-07-03 | 2017-07-03 | A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107520426B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2295808A1 (en) * | 1974-12-24 | 1976-07-23 | Pont A Mousson | LOW PRESSURE CASTING PROCESS AND PLANT IN SAND MOLD |
| DE19821419A1 (en) * | 1998-05-13 | 1999-11-18 | Georg Fischer Disa Ag | Process for increasing low pressure casting of metal, especially light metal |
| CN2621859Y (en) * | 2003-05-27 | 2004-06-30 | 西北工业大学 | Splitting large-scale Al-alloy casting low pressure casting equipment |
| CN1299858C (en) * | 2005-03-24 | 2007-02-14 | 沈阳铸造研究所 | Magnesium alloy low-pressure casting method |
| CN203409232U (en) * | 2013-07-22 | 2014-01-29 | 江苏凯特汽车部件有限公司 | Device for preventing low-pressure casting product from deforming in casting |
| CN103419147B (en) * | 2013-07-31 | 2015-10-07 | 吴江市博众精工科技有限公司 | A kind of Carrier mechanism |
| CN105436472B (en) * | 2015-12-31 | 2018-04-13 | 宁夏维尔铸造有限责任公司 | Melting pool type insulated pouring equipment |
-
2017
- 2017-07-03 CN CN201710533193.0A patent/CN107520426B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107520426A (en) | 2017-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108457188A (en) | A kind of walking incremental launching construction by multipoint jacking construction | |
| CN201411665Y (en) | Hydraulic leveling inside-elevating type slide-rising template of pier | |
| CN201574359U (en) | Hanging basket equivalent preloading device used in high-pier large-span bridge construction | |
| CN102071814A (en) | High-rise long-span door type truss integral lifting device and construction method thereof | |
| CN101824801B (en) | Non-in-situ prepressing method of self-anchored type support frame and self-anchored type support frame thereof | |
| CN101260676A (en) | Pipe pile and reaction frame connecting method and single tube pile pressure-resistant static load test method | |
| CN110359374A (en) | A kind of Hanging Basket precompressed counter-force bracket and its construction method | |
| CN202164552U (en) | Prepressing counter-force frame device of model 0 block support frame | |
| CN107271157A (en) | A kind of multidirectional multipoint configuration experiment loading counterforce device in large-tonnage space and preparation method thereof | |
| CN109235275A (en) | A kind of tooling suitable for the extra heavy 0# block bracket precompressed of high-block bridge degree continuous rigid frame | |
| CN111794127A (en) | Counter-force prepressing system and prepressing method of ultrahigh suspension casting beam 0# block support | |
| CN107336346A (en) | A kind of beam making bench | |
| CN102995669A (en) | Large-tonnage foundation pile uplift-resistant static test connection device, loading counter-force system and method | |
| CN209624252U (en) | Hanging Basket artificial intelligence loading system | |
| CN201972094U (en) | Prepressing system of hanging basket in suspending irrigation construction | |
| CN107520426B (en) | A kind of heavy castings low pressure casting carrying conversion equipment and its manufacturing method | |
| CN204112240U (en) | The overall prepressing device of Hanging Basket | |
| CN209144666U (en) | A kind of tooling suitable for the extra heavy 0# block bracket precompressed of high-block bridge degree continuous rigid frame | |
| CN209280115U (en) | A kind of dynamic weighing device for vehicle | |
| CN217378605U (en) | Suspension casting variable cross-section continuous beam zero block bracket pre-pressing device | |
| CN202577158U (en) | Hyperbolic cable tower cross beam adjusting bracket | |
| CN202416193U (en) | Asymmetric loading and pre-pressing device for bridge cantilever pouring construction hanging basket | |
| CN212780329U (en) | Bending-resistant loading long-term test device for tensioning top surface of load reinforced concrete beam | |
| CN206982971U (en) | A kind of beam making bench | |
| CN112195783A (en) | Assembly type bracket mounting structure for cable tower beam construction and prepressing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |