CN111520541A - Large-caliber three-section clamping type nodular cast iron pipeline buttress for pipe gallery - Google Patents
Large-caliber three-section clamping type nodular cast iron pipeline buttress for pipe gallery Download PDFInfo
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- CN111520541A CN111520541A CN202010361329.6A CN202010361329A CN111520541A CN 111520541 A CN111520541 A CN 111520541A CN 202010361329 A CN202010361329 A CN 202010361329A CN 111520541 A CN111520541 A CN 111520541A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/1066—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with three or more members surrounding the pipe
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- 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
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D47/00—Casting plants
- B22D47/02—Casting plants for both moulding and casting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
A large-diameter three-section clamping type nodular cast iron pipeline buttress for a pipe gallery is characterized in that the upper part of the buttress is arranged on the lower part of the buttress, the upper part of the buttress and the lower part of the buttress are fastened into a whole by a hexagon bolt assembly, and the lower part of the buttress is fixed on a foundation by an expansion bolt assembly; buttress upper end plate is connected with buttress upper portion side gusset plate, and buttress upper portion side gusset plate is connected with buttress upper portion apron, and buttress upper portion apron is connected with buttress upper portion symmetry couple cardboard, and buttress upper portion symmetry couple cardboard blocks mutually with buttress upper portion symmetry couple cardboard to be connected, and buttress upper portion and buttress sub-unit connection adopt to use hexagon head bolt subassembly to lock at 120 degrees direction tangents. The pipe pier meets the requirements of supporting and fastening functions and sufficient strength and rigidity of the pipe pier, saves materials and installation time, reduces the weight of the clamp, reduces the investment of a die, is convenient to install and construct, does not have the problem of small contact area, and is applied to the technical field of installation and construction of pipe gallery water pipes.
Description
Technical Field
The invention relates to a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery, which belongs to the technical field of installation and construction of water pipelines of the pipe gallery, and is particularly suitable for installation and construction of pipelines with the caliber of DN1200 and above in the pipe gallery.
Background
With the application development of urban pipe gallery engineering, the installation and construction of pipelines below DN1000 become mature day by day, and two half split pipeline buttresses produced by the company are widely popularized and applied. As shown in fig. 12, the lower 180 degrees of the structure is a buttress part which is connected with the pipe gallery base and plays a role in supporting and fixing the pipeline. The upper 180 degrees is a clamping hoop part which plays a role of holding the pipeline tightly. For pipelines below DN1000, the pipe body has good rigidity and small deformation, and the mode is convenient and rapid to install and use. However, for pipelines of DN1200 and above, the two half split piers present many problems: when a large-diameter pipeline is installed, due to self-weight, the pipe body can be deformed in an elliptical manner, the diameter in the vertical direction is reduced, the diameter in the horizontal direction is increased, and the pipe is difficult to install in place when a semicircular clamping hoop is installed. Secondly, even if the device can be installed in place, individual point contact exists, and the phenomenon of flash seam in most areas exists. Because the contact area is small, the frictional resistance is small, the pipeline can generate axial movement, and the effect of fixing the pipe body cannot be achieved. And thirdly, due to the construction in the pipe gallery, the space of an installation site is limited, the weight of the large-diameter pipeline half clamp is large, and the construction is assisted by professional hoisting machinery, so that a great deal of inconvenience is brought to the installation construction.
Patent No. 201921609297.6 discloses a pipe gallery is with nodular cast iron pipeline buttress that disappearance mould was cast entirely, and this patent adopts dull and stereotyped two-stage segment structure, and its structure is derived by welded structure to do not accord with the casting structure, its intensity and rigidity receive the influence, and clamp weight is big, and the input of mould is big, and the installation is construction also inconvenient, the problem of area of contact undersize easily appears.
Therefore, research and development of a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery are always new problems to be solved urgently.
Disclosure of Invention
The invention aims to provide a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery, wherein the cross section of the lower part of the buttress adopts an I-shaped structure, and is in smooth transition with a reinforcing rib at an arc part, so that the continuity of the structure is ensured, and the stability is superior to that of an H-shaped structure with the same section through strength calculation and performance tests; the upper part 1 of the buttress is connected with the lower part 2 of the buttress, and the upper part is locked by using a hexagon bolt assembly in the 120-degree tangential direction, so that the operating space is larger than that in the horizontal position, and the space occupied by a pipeline in a pipe gallery can be reduced; the upper part of the buttress adopts a clamping hoop structure, plays a role of holding the pipeline tightly, and is divided into two sections at 120 degrees from the middle during design. A symmetrical hook connection mode is adopted, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; the supporting and fastening functions of the pipeline buttress and the requirements on sufficient strength and rigidity are met, the material and the installation time are saved, the matching activity is increased, and the pipeline buttress can be more easily attached to a pipeline; and the two sections are completely consistent, namely the weight of the clamp is reduced, the investment of a mould is reduced, the installation and construction are convenient, and the problem of over-small contact area is avoided.
The purpose of the invention is realized as follows: a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery comprises a buttress upper part, a buttress lower part, a hexagon head bolt assembly and an expansion bolt assembly, wherein the buttress upper part is arranged on the buttress lower part, the hexagon head bolt assembly is used for fastening the buttress upper part and the buttress lower part into a whole, and the expansion bolt assembly is used for fixing the buttress lower part on a foundation; the upper part of the buttress consists of a buttress upper end plate, buttress upper side rib plates, a buttress upper cover plate and buttress upper symmetrical hook clamping plates, the buttress upper end plate is connected with the buttress upper side rib plates, the buttress upper side rib plates are connected with the buttress upper cover plate, the buttress upper cover plate is connected with the buttress upper symmetrical hook clamping plates, and the buttress upper symmetrical hook clamping plates are mutually clamped and connected; the cross section of the lower part 2 of the buttress adopts an I-shaped structure, the upper part of the buttress is connected with the lower part of the buttress, a hexagonal bolt assembly is used for locking in the 120-degree tangential direction, the 240-degree upper part of the buttress is a hoop clamping part, and the upper part of the buttress is divided into two sections from the middle, each 120-degree section; the symmetrical hook clamping plates on the upper part of the buttress and the symmetrical hook clamping plates on the upper part of the buttress adopt a symmetrical hook connection mode, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; the lower part of the buttress consists of a buttress lower part supporting rib plate, a buttress lower part supporting side plate, a buttress lower part upper end plate, a buttress lower part pressing plate, a buttress lower part seat, a buttress lower part lower end plate, a lower part middle hole and a lower part side hole, wherein the buttress base supporting rib plate is arranged in the middle of the buttress lower part seat, the buttress lower part seat is connected with the buttress lower part lower end plate, eight lower part middle holes are arranged in the middle of the buttress lower part seat, the interior of the buttress lower part upper end plate is connected with the buttress lower part pressing plate, the exterior of the buttress lower part upper end plate is connected with the buttress lower part supporting side plate, and the middle of the buttress lower part supporting rib plate is provided with the lower part side hole;
the working principle of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is that for a large-caliber pipeline with the diameter more than DN1200, in order to meet the supporting and fastening effects of the pipeline buttress and the requirements of sufficient strength and rigidity, the large-caliber three-section clamping type nodular cast iron pipeline buttress is adopted, the cross section of the lower part of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts an I-shaped structure, and is in smooth transition with reinforcing ribs of a circular arc part, the continuity of the structure is ensured, and the stability is superior to that of an H-shaped structure with the same cross section through strength calculation and performance tests; the upper part of the buttress is connected with the lower part of the buttress by adopting a 120-degree tangential clamping bolt, so that the operating space is larger than that at the horizontal position, and the space occupied by the pipeline in a pipe gallery can be reduced; the upper part 1 of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts a clamping hoop structure and plays a role of holding the pipeline tightly; the design is divided into two sections from the middle, and the two sections are 120 degrees respectively; a symmetrical hook connection mode is adopted, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery meets the requirements of the pipeline buttress on supporting and fastening action, sufficient strength and rigidity, saves materials and installation time, increases the matching activity and is more easily attached to a pipeline; the two sections are completely consistent, so that the weight of the clamp is reduced, the investment of a mold is reduced, the installation and construction are convenient, and the problem of over-small contact area is avoided;
the casting method of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery comprises the following steps: designing and manufacturing corresponding supporting pier molds, pouring channels and pouring cup molds of the nodular cast iron pipelines according to product drawings, and particularly randomly matching according to process requirements; preparing a model by using a foam forming machine, putting the pressed lost foam into a white mold drying chamber, and drying for later use; reasonably bonding the prepared model, and bonding corresponding information of the letter manufacturer identification according to the requirement of a client; coating a layer of refractory coating with a certain thickness on the exterior of the assembled model, and sending the refractory coating into a drying chamber for drying; putting the dried model into a negative pressure sand box according to the process requirements, and bonding a pouring gate and a pouring cup; the negative pressure sand box is provided with a vacuumizing tube, and a control valve is adjusted when the vacuum pump works to control the negative pressure; filling dry sand and compacting, laminating, vacuumizing, filling the dry sand while compacting, covering a thick plastic film on the upper surface of a sand box after filling, and vacuumizing to compact the molding sand; the prepared molten iron is poured into a model under negative pressure and poured under the pressure of-0.7 bar, so that the alloy structure is more compact and the molten iron is more environment-friendly; closing the negative pressure 10 minutes after pouring, naturally cooling for 2 hours, and taking out the casting from the sand box; performing shot blasting and sand cleaning on the casting, grinding burrs, and detecting the appearance and the size; machining a connecting hole at a corresponding position by using a machine tool according to the drawing requirements; after the size and the appearance are inspected to be qualified, the pier base and the pier upper cover are sprayed for the first time by adopting epoxy zinc-rich primer, and the finish paint is used for corrosion prevention by using high chlorinated polyethylene paint; after spraying the mark, packaging, and warehousing for shipment;
the casting material of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is as follows: the casting material at the upper part of the buttress adopts QT 420-5; the casting material at the lower part of the buttress adopts QT 420-5; the material of the hexagon head bolt is 304 stainless steel; the material of the expansion bolt is 304 stainless steel.
The key point of the invention lies in its structure, working principle and casting method.
Compared with the prior art, the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery has the advantages that the cross section of the lower part of the buttress adopts an H-shaped structure with stability superior to that of the same cross section, the upper part of the buttress is connected with the lower part of the buttress and locked by using a hexagon bolt assembly in the 120-degree tangential direction, so that the buttress has larger operation space, the space occupied by the pipeline in the pipe gallery is reduced, the upper part of the buttress adopts a clamping hoop structure, the effect of tightly holding the pipeline is achieved, the supporting and fastening effects of the pipeline buttress and the requirements on sufficient strength and rigidity are met, the material and installation time are saved, the matched activity is increased, and the buttress is more easily attached to the pipeline; and the two sections are completely consistent, namely the weight of the clamp is reduced, the investment of a die is reduced, the installation and construction are convenient, the problem of over-small contact area is avoided, and the like, and the method and the device can be widely applied to the technical field of installation and construction of pipe gallery water pipelines.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a sectional view a-a of fig. 2.
Fig. 5 is an enlarged view of a portion i of fig. 1.
Fig. 6 is a schematic view of the structure of the lower portion of the pier of the present invention.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a schematic view of the structure of the upper part of the buttress of the present invention.
Fig. 9 is a left side view of fig. 8.
Fig. 10 is a view in the direction of K of fig. 8.
Fig. 11 is an enlarged view of a portion ii of fig. 8.
FIG. 12 is a schematic view of a two half split duct pier configuration.
Detailed Description
Referring to the attached drawings, the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery comprises a buttress upper part 1, a buttress lower part 2, a hexagonal head bolt assembly 3 and an expansion bolt assembly 4, wherein the buttress upper part 1 is arranged on the buttress lower part 2, the buttress upper part 1 and the buttress lower part 2 are fastened into a whole by the hexagonal head bolt assembly 3, and the buttress lower part 2 is fixed on a foundation by the expansion bolt assembly 4; the buttress upper part 1 consists of a buttress upper end plate 1-1, buttress upper side rib plates 1-2, buttress upper cover plates 1-3 and buttress upper part symmetrical hook clamping plates 1-4, the buttress upper end plate 1-1 is connected with the buttress upper side rib plates 1-2, the buttress upper side rib plates 1-2 are connected with the buttress upper cover plates 1-3, the buttress upper cover plates 1-3 are connected with the buttress upper part symmetrical hook clamping plates 1-4, and the buttress upper part symmetrical hook clamping plates 1-4 are mutually clamped and connected with the buttress upper part symmetrical hook clamping plates 1-4; the cross section of the lower part 2 of the buttress adopts an I-shaped structure, the upper part 1 of the buttress is connected with the lower part 2 of the buttress, a hexagonal bolt assembly 3 is used for locking in the 120-degree tangential direction, 1240 degrees of the upper part of the buttress are clamping hoop parts, and the upper part 1 of the buttress is divided into two sections from the middle, each 120 degrees; the symmetrical hook snap-gauge 1-4 on the upper part of the buttress and the symmetrical hook snap-gauge 1-4 on the upper part of the buttress adopt a symmetrical hook connection mode, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; the buttress lower part 2 consists of a buttress lower part support rib plate 2-1, a buttress lower part support side plate 2-2, a buttress lower part upper end plate 2-3, a buttress lower part pressure plate 2-4, a buttress lower part seat 2-5, a buttress lower part lower end plate 2-6, a lower part middle hole 2-7 and a lower part side hole 2-8, a buttress base support rib plate 2-1 is arranged in the middle of the buttress lower seat 2-5, the buttress lower seat 2-5 is connected with the buttress lower end plate 2-6, eight lower middle holes 2-7 are arranged in the middle of a buttress lower seat 2-5, the interior of a buttress lower upper end plate 2-3 is connected with a buttress lower pressure plate 2-4, the exterior of the buttress lower upper end plate 2-3 is connected with a buttress lower support side plate 2-2, and a lower side hole 2-8 is arranged in the middle of a buttress lower support rib plate 2-1.
The working principle of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is that for a large-caliber pipeline with the diameter more than DN1200, in order to meet the supporting and fastening effects of the pipeline buttress and the requirements of sufficient strength and rigidity, the large-caliber three-section clamping type nodular cast iron pipeline buttress is adopted, the cross section of the lower part 2 of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts an I-shaped structure, and is in smooth transition with reinforcing ribs of a circular arc part, the continuity of the structure is ensured, and the stability is superior to that of an H-shaped structure with the same cross section through strength calculation and performance tests; the upper part 1 of the buttress and the lower part 2 of the buttress are connected by adopting a 120-degree tangential clamping bolt, so that the operating space is larger than that at the horizontal position, and the space of a pipe gallery occupied by a pipeline can be reduced; the upper part 1 of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts a clamping hoop structure and plays a role of holding the pipeline tightly; the design is divided into two sections from the middle, and the two sections are 120 degrees respectively; a symmetrical hook connection mode is adopted, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery meets the requirements of the pipeline buttress on supporting and fastening action, sufficient strength and rigidity, saves materials and installation time, increases the matching activity and is more easily attached to a pipeline; and the two sections are completely consistent, so that the weight of the clamp is reduced, the investment of a mould is reduced, the installation and construction are convenient, and the problem of over-small contact area is avoided.
The casting method of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery comprises the following steps: designing and manufacturing corresponding supporting pier molds, pouring channels and pouring cup molds of the nodular cast iron pipelines according to product drawings, and particularly randomly matching according to process requirements; preparing a model by using a foam forming machine, putting the pressed lost foam into a white mold drying chamber, and drying for later use; reasonably bonding the prepared model, and bonding corresponding information of the letter manufacturer identification according to the requirement of a client; coating a layer of refractory coating with a certain thickness on the exterior of the assembled model, and sending the refractory coating into a drying chamber for drying; putting the dried model into a negative pressure sand box according to the process requirements, and bonding a pouring gate and a pouring cup; the negative pressure sand box is provided with a vacuumizing tube, and a control valve is adjusted when the vacuum pump works to control the negative pressure; filling dry sand and compacting, laminating, vacuumizing, filling the dry sand while compacting, covering a thick plastic film on the upper surface of a sand box after filling, and vacuumizing to compact the molding sand; the prepared molten iron is poured into a model under negative pressure and poured under the pressure of-0.7 bar, so that the alloy structure is more compact and the molten iron is more environment-friendly; closing the negative pressure 10 minutes after pouring, naturally cooling for 2 hours, and taking out the casting from the sand box; performing shot blasting and sand cleaning on the casting, grinding burrs, and detecting the appearance and the size; machining a connecting hole at a corresponding position by using a machine tool according to the drawing requirements; after the size and the appearance are inspected to be qualified, the buttress base 2 and the buttress upper cover 1 are sprayed for the first time by adopting epoxy zinc-rich primer, and the finish paint is used for corrosion prevention by using high chlorinated polyethylene paint; and after spraying the mark, packaging, and warehousing for shipment.
The casting material of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is as follows: the casting material of the upper part 1 of the buttress adopts QT 420-5; the casting material of the lower part 2 of the buttress adopts QT 420-5; the material of the hexagon head bolt 3 is 304 stainless steel; the material of the expansion bolt 4 is 304 stainless steel.
Claims (4)
1. The utility model provides a pipe gallery is with heavy-calibre three-section clamp type nodular cast-iron pipeline buttress, includes buttress upper portion, buttress lower part, hexagon head bolt subassembly, expansion bolts subassembly, its characterized in that: the upper part of the buttress is arranged on the lower part of the buttress, the upper part of the buttress and the lower part of the buttress are fastened into a whole by a hexagon bolt assembly, and the lower part of the buttress is fixed on a foundation by an expansion bolt assembly; the upper part of the buttress consists of a buttress upper end plate, buttress upper side rib plates, a buttress upper cover plate and buttress upper symmetrical hook clamping plates, the buttress upper end plate is connected with the buttress upper side rib plates, the buttress upper side rib plates are connected with the buttress upper cover plate, the buttress upper cover plate is connected with the buttress upper symmetrical hook clamping plates, and the buttress upper symmetrical hook clamping plates are mutually clamped and connected; the cross section of the lower part 2 of the buttress adopts an I-shaped structure, the upper part of the buttress is connected with the lower part of the buttress, a hexagonal bolt assembly is used for locking in the 120-degree tangential direction, the 240-degree upper part of the buttress is a hoop clamping part, and the upper part of the buttress is divided into two sections from the middle, each 120-degree section; the symmetrical hook clamping plates on the upper part of the buttress and the symmetrical hook clamping plates on the upper part of the buttress adopt a symmetrical hook connection mode, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; buttress lower part by buttress lower part support gusset, buttress lower part support curb plate, buttress lower part upper end plate, buttress lower part clamp plate, buttress lower part seat, buttress lower part lower end plate, lower part mesopore, the lower part side opening is constituteed, set up buttress base support gusset in the centre of buttress lower part seat, be connected with buttress lower part lower end plate at buttress lower part seat, set up eight lower part mesopores at the middle part of buttress lower part seat, the inside and buttress lower part clamp plate of buttress lower part upper end plate is connected, buttress lower part upper end plate outside is connected with buttress lower part support curb plate, the middle part at buttress lower part support gusset sets up the lower part side opening.
2. The large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery according to claim 1 is characterized in that: the working principle of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is that for a large-caliber pipeline with the diameter more than DN1200, in order to meet the supporting and fastening effects of the pipeline buttress and the requirements of sufficient strength and rigidity, the large-caliber three-section clamping type nodular cast iron pipeline buttress is adopted, the cross section of the lower part of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts an I-shaped structure, and is in smooth transition with reinforcing ribs of a circular arc part, the continuity of the structure is ensured, and the stability is superior to that of an H-shaped structure with the same cross section through strength calculation and performance tests; the upper part of the buttress is connected with the lower part of the buttress by adopting a 120-degree tangential clamping bolt, so that the operating space is larger than that at the horizontal position, and the space occupied by the pipeline in a pipe gallery can be reduced; the upper part 1 of the buttress of the large-caliber three-section clamping type nodular cast iron pipeline buttress adopts a clamping hoop structure and plays a role of holding the pipeline tightly; the design is divided into two sections from the middle, and the two sections are 120 degrees respectively; a symmetrical hook connection mode is adopted, namely, one half of each section in the width direction is provided with an outer hook, the other half is provided with an inner hook, and when the two sections are oppositely installed, the inner hook and the outer hook are mutually buckled and locked; a large-caliber three-section clamping type nodular cast iron pipeline buttress for a pipe gallery meets the requirements of the pipeline buttress on supporting and fastening action, sufficient strength and rigidity, saves materials and installation time, increases the matching activity and is more easily attached to a pipeline; and the two sections are completely consistent, so that the weight of the clamp is reduced, the investment of a mould is reduced, the installation and construction are convenient, and the problem of over-small contact area is avoided.
3. The large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery according to claim 1 is characterized in that: the casting method of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery comprises the following steps: designing and manufacturing corresponding supporting pier molds, pouring channels and pouring cup molds of the nodular cast iron pipelines according to product drawings, and particularly randomly matching according to process requirements; preparing a model by using a foam forming machine, putting the pressed lost foam into a white mold drying chamber, and drying for later use; reasonably bonding the prepared model, and bonding corresponding information of the letter manufacturer identification according to the requirement of a client; coating a layer of refractory coating with a certain thickness on the exterior of the assembled model, and sending the refractory coating into a drying chamber for drying; putting the dried model into a negative pressure sand box according to the process requirements, and bonding a pouring gate and a pouring cup; the negative pressure sand box is provided with a vacuumizing tube, and a control valve is adjusted when the vacuum pump works to control the negative pressure; filling dry sand and compacting, laminating, vacuumizing, filling the dry sand while compacting, covering a thick plastic film on the upper surface of a sand box after filling, and vacuumizing to compact the molding sand; the prepared molten iron is poured into a model under negative pressure and poured under the pressure of-0.7 bar, so that the alloy structure is more compact and the molten iron is more environment-friendly; closing the negative pressure 10 minutes after pouring, naturally cooling for 2 hours, and taking out the casting from the sand box; performing shot blasting and sand cleaning on the casting, grinding burrs, and detecting the appearance and the size; machining a connecting hole at a corresponding position by using a machine tool according to the drawing requirements; after the size and the appearance are inspected to be qualified, the pier base and the pier upper cover are sprayed for the first time by adopting epoxy zinc-rich primer, and the finish paint is used for corrosion prevention by using high chlorinated polyethylene paint; and after spraying the mark, packaging, and warehousing for shipment.
4. The large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery according to claim 1 is characterized in that: the casting material of the large-caliber three-section clamping type nodular cast iron pipeline buttress for the pipe gallery is as follows: the casting material at the upper part of the buttress adopts QT 420-5; the casting material at the lower part of the buttress adopts QT 420-5; the material of the hexagon head bolt is 304 stainless steel; the material of the expansion bolt is 304 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361329.6A CN111520541A (en) | 2020-04-30 | 2020-04-30 | Large-caliber three-section clamping type nodular cast iron pipeline buttress for pipe gallery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010361329.6A CN111520541A (en) | 2020-04-30 | 2020-04-30 | Large-caliber three-section clamping type nodular cast iron pipeline buttress for pipe gallery |
Publications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044007A (en) * | 2022-05-27 | 2022-09-13 | 中石化石油工程技术服务有限公司 | Preparation method of polyurethane buttress and continuous pipeline construction method |
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| CN110625064A (en) * | 2019-09-25 | 2019-12-31 | 辽宁爱维尔金属成型科技股份有限公司 | Method for manufacturing and spraying liquid-state solvent-free epoxy resin lining nodular cast iron pipe fitting |
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| CN102313081A (en) * | 2010-07-09 | 2012-01-11 | Trw车辆电气与零件有限公司 | Component for a fastening clip and fastening clip |
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| JP2018168869A (en) * | 2017-03-29 | 2018-11-01 | 三和テッキ株式会社 | Piping support device |
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| CN110625064A (en) * | 2019-09-25 | 2019-12-31 | 辽宁爱维尔金属成型科技股份有限公司 | Method for manufacturing and spraying liquid-state solvent-free epoxy resin lining nodular cast iron pipe fitting |
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| CN115044007A (en) * | 2022-05-27 | 2022-09-13 | 中石化石油工程技术服务有限公司 | Preparation method of polyurethane buttress and continuous pipeline construction method |
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