CN104099949B - Ductile cast iron manhole cover and preparation method thereof - Google Patents
Ductile cast iron manhole cover and preparation method thereof Download PDFInfo
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- CN104099949B CN104099949B CN201410379442.1A CN201410379442A CN104099949B CN 104099949 B CN104099949 B CN 104099949B CN 201410379442 A CN201410379442 A CN 201410379442A CN 104099949 B CN104099949 B CN 104099949B
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- elastic locking
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Abstract
The invention discloses a kind of ductile cast iron manhole cover and preparation method and V method casting method, comprise manhole cover body, this manhole cover body is provided with elastic locking device, described elastic locking device is not arranged on the reinforcement at the described well lid back side, but be arranged in the plane at the described well lid back side, be not connected with reinforcement.Compared with the existing, ductile cast iron manhole cover and the preparation method of the present invention's protection simplify V method mould structure, reduce design and difficulty of processing.
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 formed in molding rear boss position will place core cushion block becomes hanging structure to allow elastic locking device part, do like this and add mould complexity on the one hand, add the complexity of technique on the other hand, and the use of core adds production cost, in addition, the foundry goods elastic locking device part cloak produced in this way is serious.
In order to the elastic locking device after making casting becomes unsettled mode, need to lay the spaced apart of core and well lid after moulding terminates.
Traditional well lid elastic locking device is fixed on the reinforcement at the well lid back side, as shown in Figure 2.
Summary of the invention
An 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 manhole cover body, this manhole cover body is provided with elastic locking device, described elastic locking device is not arranged on the reinforcement at the described well lid back side, but be arranged in the plane at the described well lid back side, be not connected with reinforcement.
As preferably, described elastic locking device has 3, and the fixed reference of each elastic locking device is all positioned on the center line of the angle of adjacent two reinforcements, and distance well lid outermost distance is 180mm.
Two of object of the present invention is the preparation method providing a kind 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 the elastic locking device made in advance is placed on mould, fixed position double faced adhesive tape foam being touched sample stiff end and mould elastic locking device bonds together, for when preventing overlay film and add sand, bubbles model is shifted or bends, a steel nail is inserted at bubbles model overhead positions lower surface, the steel nail other end and contacting dies, to increase the support strength that foam touches sample;
2. eva film being heated in advance thin film planar is mirror status, utilizes moving laminating machine overlay film on the mould placing bubbles model;
3. overlay film well after, mould is moved to spray station in the effect of mobile plain jolter, use spray gun sprayed coating is carried out to film surface;
4., after having sprayed, move to button empty van position at the effect bed die of mobile plain jolter, the empty van of recovery is accurately placed on mould under the effect of buckleing empty van manipulator;
5. detain the mould after empty van to be moved in the effect of mobile plain jolter and to add sand station, the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, starts vibrations and add sand, adds after sand completes, carries out strike-ofing and covering 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, is transported to teeming line upper by mould assembling transfer car(buggy) and cast transfer car(buggy); During cast, the elastic locking device that bubbles model makes is shaping according to evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is shaping according to V method casting principle;
7. the casting mold after casting complete is transported on cooling roller bed through supercooling transfer car(buggy) and cools, and cooled casting mold is transported to solution case position and carries out solution case, obtains foundry goods after knockout.
As preferably, the fixed position of described bubbles model is with certain gradient, and described bubbles model stiff end is provided with the gradient matched 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 reinforcement 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 reinforcement at the well lid back side; the position that well lid service time of such design, reinforcement of a specified duration was subject to elastic force effect can become weak location; easy generation fatigue is bending even to rupture; reinforcement ruptures; the bearing capacity of well lid can decline naturally, thus affects well lid safety.After changing the position of elastic locking device, the elasticity loss that reinforcement receives, and also amended elastic locking device has special fixed position, and the moment of torsion of elastic locking device is only born in this position, and the security of well lid is further improved.Even if because service life, elastic locking device too of a specified duration went wrong, also harmful effect can not be produced to the reinforcement of well lid.(2) there are three anti-functions, i.e. antitheft, noise-proofing, anti-settling.(3) bearing capacity is according to country and the test of European relevant criterion, and bearing 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, first the elastic locking device that foam makes is bonded to position location, elastic locking device overhead positions arranges a nail as support, then pour into a mould after overlay film moulding, elastic locking device part is according to the principle of lost foam casting, and molten metal is by foam vaporization also cooling forming.This process has following benefit: (1) simplifies V method mould structure, and reduce design and difficulty of processing (2) omission core quantity, 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 fixed position of the present invention enlarged drawing;
Fig. 6 is well lid bubbles model schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in 3 figure, a kind of well lid, comprises manhole cover body and elastic locking device 5, and in the present invention, elastic locking device is not arranged on the reinforcement at the manhole cover body back side, but is arranged in the plane at the manhole cover body back side, is not connected with reinforcement.
Elastic locking device 5 has 3, and the fixed reference of each elastic locking device 5 is all positioned on the center line of the angle of adjacent two reinforcements, and distance well lid outermost distance is 180mm.
Do not need elastic locking device 5 to make when making V method mould, just the binding site structure fabrication at elastic locking device 5 and the well lid back side out, simultaneously as the fixed position of bubbles model, as illustrated in figures 4-5, wherein 1 is elastic locking device 5 and the binding site of well lid, the bubbles model fixed position 2 of mould elastic locking device.
Make the model of elastic locking device 5 in addition of foam, as the mould that evaporative pattern part during casting uses, graphics as shown in Figure 6.
The concrete production process of well lid of the present invention is as follows:
1. (bubbles model is made by EPS plastic material on mould to place the bubbles model of the elastic locking device made in advance, its preparation method is as follows: first pre-heat foamable, then under the influence of air pressure the material filling after pre-heat foamable is entered in the mould of aluminum alloy, after hot briquetting, rapid water-cooled, opens mould and can take out bubbles model.), the bubbles model fixed position 2 of bubbles model stiff end 3 with mould elastic locking device is bonded together with double faced adhesive tape, for when preventing overlay film and add sand, bubbles model is shifted or bends, a steel nail is inserted at bubbles model overhead positions 4 lower surface, the steel nail other end and contacting dies, to increase the support strength of bubbles model.
Because the bubbles model fixed position 2 of mould elastic locking device is with 15 ° of gradients, just coordinate with the gradient of bubbles model stiff end 3, such one side can better fixed foam model, prevent model from sinking in this position, on the other hand when molding mould can well with thin film separation, bubbles model is stayed in sand mold.
2. eva film being heated in advance thin film planar is mirror status, utilizes moving laminating machine overlay film on the mould placing bubbles model.
3. overlay film well after, mould is moved to spray station in the effect of mobile plain jolter, use spray gun sprayed coating is carried out to film surface.
4. after having sprayed, move to button empty van position at the effect bed die of mobile plain jolter, reclaim at sandbox the empty van that roller-way is recovered and be accurately anchored on mould under the effect of buckleing empty van manipulator.
5. the mould after detaining empty van is moved in the effect of mobile plain jolter and adds sand station, and the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, start vibrations and add sand.Add after sand completes, carry out strike-ofing and covering 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, is transported to teeming line upper by mould assembling transfer car(buggy) and cast transfer car(buggy).During cast, the elastic locking device that bubbles model makes is shaping according to evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is shaping according to V method casting principle.
7. the casting mold after casting complete is transported on cooling roller bed through supercooling transfer car(buggy) and cools, and cooled casting mold is transported to solution case position and carries out solution case, obtains foundry goods after knockout.
Claims (3)
1. prepare a method for ductile cast iron manhole cover, it is characterized in that the method comprises the following steps:
1. the bubbles model of the elastic locking device made in advance is placed on mould, the bubbles model fixed position double faced adhesive tape of bubbles model stiff end and mould elastic locking device is bonded together, for when preventing overlay film and add sand, bubbles model is shifted or bends, a steel nail is inserted at bubbles model overhead positions lower surface, the steel nail other end and contacting dies, to increase the support strength of bubbles model;
2. eva film being heated in advance thin film planar is mirror status, utilizes moving laminating machine overlay film on the mould placing bubbles model;
3. after overlay film completes, 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, move to button empty van position at the effect bed die of mobile plain jolter, the empty van of recovery is accurately placed on mould under the effect of buckleing empty van manipulator;
5. detain the mould after empty van to be moved in the effect of mobile plain jolter and to add sand station, the lifting under compressed air effect of mobile plain jolter air spring, contacts with raining-type sand filling device, starts vibrations and add sand, adds after sand completes, carries out strike-ofing and covering notacoria;
6. moulding complete after upper casting mold and lower casting mold through molding, 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) be transported to teeming line upper; During cast, the elastic locking device that bubbles model makes is shaping according to evaporative pattern principle, and foam is vaporized under the effect of molten iron, and molten iron is full of die cavity, and remainder is shaping according to V method casting principle;
7. the casting mold after casting complete is transported on cooling roller bed through supercooling transfer car(buggy) and cools, and cooled casting mold is transported to solution case position and carries out solution case, obtains foundry goods after knockout;
Described ductile cast iron manhole cover comprises manhole cover body, and this manhole cover body is provided with elastic locking device, and described elastic locking device is not arranged on the reinforcement at the described well lid back side, but is arranged in the plane at the described well lid back side, is not connected with reinforcement.
2. the method preparing ductile cast iron manhole cover according to claim 1, is characterized in that: described bubbles model fixed position band is gradient, and described bubbles model stiff end is provided with the gradient matched with it.
3. the method preparing ductile cast iron manhole cover according to claim 2, is characterized in that: described gradient is 15 °.
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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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| 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 CN104099949A (en) | 2014-10-15 |
| CN104099949B true CN104099949B (en) | 2015-12-30 |
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| CN201410379442.1A Active CN104099949B (en) | 2014-08-04 | 2014-08-04 | Ductile cast iron manhole cover and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104099949A (en) | 2014-10-15 |
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