CN104099949A - Spheroidal graphite cast iron well lid and production method thereof - Google Patents
Spheroidal graphite cast iron well lid and production method thereof Download PDFInfo
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- CN104099949A CN104099949A CN201410379442.1A CN201410379442A CN104099949A CN 104099949 A CN104099949 A CN 104099949A CN 201410379442 A CN201410379442 A CN 201410379442A CN 104099949 A CN104099949 A CN 104099949A
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- well lid
- locking device
- elastic locking
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- bubbles model
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Abstract
The invention discloses a spheroidal graphite cast iron well lid and a production method thereof and a V-method casting method. The spheroidal graphite cast iron well lid comprises a well lid body; an elastic locking device is arranged on the well lid; the elastic locking device is not arranged on a reinforcing rib on the back of the well lid but on a flat surface on the back of the well lid and is not connected with the reinforcing rib. Compared with the prior art, the spheroidal graphite cast iron well lid and the production method thereof simplify a V-method mold structure and reduce design and machining difficulties.
Description
Technical field
The present invention relates to a kind of ductile cast iron manhole cover and preparation method thereof.
Background technology
In traditional well lid well seat production technology, during planned well box cover die, the elastic locking device on well lid and well lid are designed to one, as shown in Figure 1, the cavity forming in molding rear boss position will be placed core cushion block allows elastic locking device partly become hanging structure, do like this and increased on the one hand mould complexity, increased on the other hand the complexity of technique, and the use of core has increased cost of production, in addition the foundry goods elastic locking device part cloak of producing in this way, is serious.
In order to make casting elastic locking device afterwards become unsettled mode, need to after moulding finishes, lay between core and well lid and separate.
Traditional well lid elastic locking device is fixed on the reinforcing rib at the well lid back side, as shown in Figure 2.
Summary of the invention
One of object of the present invention is just to provide a kind of ductile cast iron manhole cover, this ductile cast iron manhole cover.
Technical scheme of the present invention is: a kind of ductile cast iron manhole cover, comprise well lid body, on this well lid body, be provided with elastic locking device, described elastic locking device is not arranged on the reinforcing rib at the described well lid back side, and be arranged in the plane at the described well lid back side, be not connected with reinforcing rib.
As preferably, described elastic locking device.
Two of object of the present invention is to provide a kind of preparation method of ductile cast iron manhole cover.
A preparation method for ductile cast iron manhole cover, the method comprises the following steps:
1. the bubbles model of placing the elastic locking device of making is in advance to mould, the permanent position of foam being touched to sample fixed end and mould elastic locking device bonds together with double faced adhesive tape, for preventing overlay film and bubbles model displacement or crooked while adding sand, at bubbles model overhead positions soffit, insert a steel nail, the steel nail other end contacts with mould, touches the support strength of sample to increase foam;
2. eva film is heated to thin film planar in advance and is mirror status, utilize moving laminating machine overlay film on the mould of placing bubbles model;
3. overlay film well after, mould is moved to spray station in the effect of mobile plain jolter, uses spray gun to carry out sprayed coating to film surface;
4. after having sprayed, at the effect bed die of mobile plain jolter, move to button empty van position, the empty van of recovery is accurately placed on mould under the effect of buckleing empty van manipulator;
5. detain mould after empty van and be moved to and add sand station in the effect of mobile plain jolter, the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, starts vibrations and adds sand, after adding sand and completing, strike-offs and covers notacoria;
6. the upper casting mold and lower casting mold that moulding is good is through molding, and the elastic locking device bubbles model on well lid is stayed in die cavity, after mould assembling, by mould assembling transfer car(buggy) and cast transfer car(buggy), is transported to teeming line upper; During cast, the elastic locking device that bubbles model is made is according to the moulding of evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is according to the moulding of V method casting principle;
7. the casting mold after casting complete is transported on cooling roller bed coolingly through supercooling transfer car(buggy), and cooled casting mold is transported to be separated case position and separate case, obtains foundry goods after knockout.
As preferably, the permanent position of described bubbles model is with certain gradient, and described bubbles model fixed end is provided with the gradient matching with it.
Compared with prior art, beneficial effect of the present invention is:
The well lid tool of the present invention's protection has the following advantages: (1) traditional well lid design flexibility locking device is fixed on the reinforcing rib at the well lid back side; in the well lid course of work; the elastic force of elastic locking device has just been applied on the reinforcing rib at the well lid back side; like this well lid service time of design of a specified duration the reinforcing rib position that is subject to elastic force effect can become weak location; tired bending easily occurs even ruptures; reinforcing rib fracture, the supporting capacity of well lid can decline naturally, thereby affects well lid safety.Change behind the position of elastic locking device, the elasticity of receiving on reinforcing rib disappears, and amended elastic locking device has special permanent position, and the moment of torsion of elastic locking device is only born in this position, and the safety of well lid is further improved.Even because service life, elastic locking device too of a specified duration went wrong, also can not produce harmful effect to the reinforcing rib of well lid.(2) there are three anti-functions, i.e. antitheft, noise-proofing, anti-settling.(3) supporting capacity is according to country and the test of European relevant criterion, and supporting capacity is all higher than national standard and European standard.(4) there is the advantages such as difficulty of construction is low, construction quality good, the construction period is short, regular maintenance is convenient and simple.
The present invention is when V method Design of Dies, elastic locking device is not designed, when preparing overlay film with this mould, the elastic locking device of first foam being made bonds to position location, elastic locking device overhead positions arranges a nail as support, then after overlay film moulding, pour into a mould, elastic locking device part is according to the principle of lost foam casting, and molten metal is by foam vaporization cooling forming.This process has following benefit: (1) simplifies V method mould structure, reduces design and difficulty of processing (2) and omits core quantity, and cost-saving (3) alleviate the complexity of technological operation.
Accompanying drawing explanation
Fig. 1 is background technology well lid mould elastic locking device structural representation of the present invention;
Fig. 2 is background technology well lid elastic locking device position view of the present invention;
Fig. 3 is well lid elastic locking device position view of the present invention;
Fig. 4 is well lid mould elastic locking device binding site structural representation of the present invention;
Fig. 5 locking device of the present invention permanent position enlarged drawing;
Fig. 6 is well lid bubbles model schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in 3 figure, a kind of well lid, comprises well lid body and elastic locking device 5, and in the present invention, elastic locking device is not arranged on the reinforcing rib at the well lid body back side, and is arranged in the plane at the well lid body back side, is not connected with reinforcing rib.
Elastic locking device 5 has 3, and the fixed reference of each elastic locking device 5 is all positioned on the center line of angle of adjacent two reinforcing ribs, apart from well lid outermost distance, is 180mm.
When making V method mould, do not need elastic locking device 5 to make, just the binding site structure fabrication at elastic locking device 5 and the well lid back side out, while is as the permanent position of bubbles model, as shown in Fig. 4-5, wherein 1 is the binding site of elastic locking device 5 and well lid, the 2nd, and the bubbles model permanent position of elastic locking device 5.
Of foam, make in addition the model of elastic locking device 5, the mould that during as casting, evaporative pattern is partly used, graphics is as shown in Figure 6.
The concrete manufacturing process of well lid of the present invention is as follows:
To mould, (bubbles model is made by EPS plastic material the bubbles model of the elastic locking device that 1. placement is made in advance, its preparation method is as follows: first pre-heat foamable, then under the effect of air pressure, the material filling after pre-heat foamable is entered in the mould of aluminium alloys system, after hot briquetting, rapid water-cooled, opens mould and can take out bubbles model.), foam is touched to sample fixed end 3 to bond together with the permanent position 2 use double faced adhesive tapes of mould elastic locking device, for preventing overlay film and bubbles model displacement or crooked while adding sand, at bubbles model overhead positions 4 soffits, insert a steel nail, the steel nail other end contacts with mould, to increase the support strength of bubbles model.
Because the permanent position 2 of bubbles model is with 15 ° of gradients, just coordinate with the gradient of bubbles model fixed end 3, better fixed foam model so on the one hand, prevent that model from sinking in this position, on the other hand when molding mould can well with divided thin film from, bubbles model is stayed in sand mold.
2. eva film is heated to thin film planar in advance and is mirror status, utilize moving laminating machine overlay film on the mould of placing bubbles model.
3. overlay film well after, mould is moved to spray station in the effect of mobile plain jolter, uses spray gun to carry out sprayed coating to film surface.
4. after having sprayed, at the effect bed die of mobile plain jolter, move to button empty van position, at sandbox, reclaim the empty van being recovered on roller-way and buckleing under the effect of empty van manipulator and be accurately anchored on mould.
5. detain mould after empty van and be moved to and add sand station in the effect of mobile plain jolter, the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, starts vibrations and adds sand.After adding sand and completing, strike-off and cover notacoria.
6. the upper casting mold and lower casting mold that moulding is good is through molding, and the elastic locking device bubbles model on well lid is stayed in die cavity, after mould assembling, by mould assembling transfer car(buggy) and cast transfer car(buggy), is transported to teeming line upper.During cast, the elastic locking device that bubbles model is made is according to the moulding of evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is according to the moulding of V method casting principle.
7. the casting mold after casting complete is transported on cooling roller bed coolingly through supercooling transfer car(buggy), and cooled casting mold is transported to be separated case position and separate case, obtains foundry goods after knockout.
Claims (5)
1. a ductile cast iron manhole cover, comprise well lid body, on this well lid body, be provided with elastic locking device, it is characterized in that: described elastic locking device is not arranged on the reinforcing rib at the described well lid back side, and be arranged in the plane at the described well lid back side, be not connected with reinforcing rib.
2. ductile cast iron manhole cover according to claim 1, is characterized in that: described elastic locking device has 3, and the fixed reference of each elastic locking device is all positioned on the center line of angle of adjacent two reinforcing ribs, apart from well lid outermost distance, is 180mm.
3. a method of preparing the ductile cast iron manhole cover described in the arbitrary claim of claim 1 or 2, is characterized in that the method comprises the following steps:
1. the bubbles model of placing the elastic locking device of making is in advance to mould, the permanent position of foam being touched to sample fixed end and mould elastic locking device bonds together with double faced adhesive tape, for preventing overlay film and bubbles model displacement or crooked while adding sand, at bubbles model overhead positions soffit, insert a steel nail, the steel nail other end contacts with mould, touches the support strength of sample to increase foam;
2. eva film is heated to thin film planar in advance and is mirror status, utilize moving laminating machine overlay film on the mould of placing bubbles model;
3. overlay film well after, mould is moved to spray station in the effect of mobile plain jolter, uses spray gun to carry out sprayed coating to film surface;
4. after having sprayed, at the effect bed die of mobile plain jolter, move to button empty van position, the empty van of recovery is accurately placed on mould under the effect of buckleing empty van manipulator;
5. detain mould after empty van and be moved to and add sand station in the effect of mobile plain jolter, the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, starts vibrations and adds sand, after adding sand and completing, strike-offs and covers notacoria;
6. the upper casting mold and lower casting mold that moulding is good is through molding, and the elastic locking device bubbles model on well lid is stayed in die cavity, after mould assembling, by mould assembling transfer car(buggy) and cast transfer car(buggy), is transported to teeming line upper; During cast, the elastic locking device that bubbles model is made is according to the moulding of evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is according to the moulding of V method casting principle;
7. the casting mold after casting complete is transported on cooling roller bed coolingly through supercooling transfer car(buggy), and cooled casting mold is transported to be separated case position and separate case, obtains foundry goods after knockout.
4. the method for preparing ductile cast iron manhole cover according to claim 3, is characterized in that: the permanent position band of described bubbles model is gradient, and described bubbles model fixed end is provided with the gradient matching with it.
5. the method for preparing ductile cast iron manhole cover according to claim 3, is characterized in that: described gradient is 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379442.1A CN104099949B (en) | 2014-08-04 | 2014-08-04 | Ductile cast iron manhole cover and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410379442.1A CN104099949B (en) | 2014-08-04 | 2014-08-04 | Ductile cast iron manhole cover and preparation method thereof |
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| CN104099949A true CN104099949A (en) | 2014-10-15 |
| CN104099949B CN104099949B (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912113A (en) * | 2015-06-23 | 2015-09-16 | 昌邑中铸铸业有限公司 | Well lid and technological method thereof |
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| KR100641311B1 (en) * | 2006-06-16 | 2006-11-01 | 율성산업(주) | Manhole cover |
| CN101189394A (en) * | 2004-07-14 | 2008-05-28 | 水力工程技术股份公司 | Device for locking a cover of a manhole top, and manhole top |
| CN201198572Y (en) * | 2008-03-31 | 2009-02-25 | 林仙成 | Well cover |
| CN101899844A (en) * | 2010-07-23 | 2010-12-01 | 盐城三山道路设施有限公司 | Composite manhole cover and manufacturing method thereof |
| CN201730111U (en) * | 2010-04-22 | 2011-02-02 | 邵夕贤 | Ductile cast iron manhole cover assembly |
| CN203346908U (en) * | 2013-06-22 | 2013-12-18 | 平遥县万事达铸造有限公司 | Anti-sinking well lid |
| CN203737942U (en) * | 2014-03-10 | 2014-07-30 | 长沙金龙铸造实业有限公司 | Nodular cast iron well cover pouring system |
-
2014
- 2014-08-04 CN CN201410379442.1A patent/CN104099949B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101189394A (en) * | 2004-07-14 | 2008-05-28 | 水力工程技术股份公司 | Device for locking a cover of a manhole top, and manhole top |
| KR100641311B1 (en) * | 2006-06-16 | 2006-11-01 | 율성산업(주) | Manhole cover |
| CN201198572Y (en) * | 2008-03-31 | 2009-02-25 | 林仙成 | Well cover |
| CN201730111U (en) * | 2010-04-22 | 2011-02-02 | 邵夕贤 | Ductile cast iron manhole cover assembly |
| CN101899844A (en) * | 2010-07-23 | 2010-12-01 | 盐城三山道路设施有限公司 | Composite manhole cover and manufacturing method thereof |
| CN203346908U (en) * | 2013-06-22 | 2013-12-18 | 平遥县万事达铸造有限公司 | Anti-sinking well lid |
| CN203737942U (en) * | 2014-03-10 | 2014-07-30 | 长沙金龙铸造实业有限公司 | Nodular cast iron well cover pouring system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912113A (en) * | 2015-06-23 | 2015-09-16 | 昌邑中铸铸业有限公司 | Well lid and technological method thereof |
| CN104912113B (en) * | 2015-06-23 | 2018-05-11 | 昌邑中铸铸业有限公司 | A kind of well lid and its process |
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| Publication number | Publication date |
|---|---|
| CN104099949B (en) | 2015-12-30 |
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