CN112776127A - Preparation method of cement isolation pier - Google Patents
Preparation method of cement isolation pier Download PDFInfo
- Publication number
- CN112776127A CN112776127A CN202011623457.XA CN202011623457A CN112776127A CN 112776127 A CN112776127 A CN 112776127A CN 202011623457 A CN202011623457 A CN 202011623457A CN 112776127 A CN112776127 A CN 112776127A
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- Prior art keywords
- cement
- section
- isolation pier
- hole
- plate
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- 239000004568 cement Substances 0.000 title claims abstract description 86
- 238000002955 isolation Methods 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000010422 painting Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 24
- 239000003973 paint Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 5
- 239000011150 reinforced concrete Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/26—Assemblies of separate moulds, i.e. of moulds or moulding space units, each forming a complete mould or moulding space unit independently from each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/285—Core puller
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
- E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention discloses a preparation method of a cement hard shoulder, which comprises the following steps: s1, assembling the die; s2, filling the mold cavity; s3, forming the isolation holes of the cement isolation piers; s4, demolding the cement isolation pier; and S5, painting. The last cement injection is carried out on the mould along the feeding ports left at the front side and the rear side of the upper end of the mould, the injection condition can be obviously observed, the complete coincidence of the cement injection condition and the mould is ensured, and after the cement is placed for a period of time, the cement becomes more compact due to gravity, a pit is formed at the upper end of the cement isolation pier, the cement can be added in time to fill the pit, and the size deviation of the finally formed cement isolation pier is prevented; the upper pressing plate is arranged on the die, and the bottom surface of the upper pressing plate is an arc surface, so that an arc groove which is convenient to move and prevent water accumulation is formed in the bottom of the cement isolation pier at the last forming position, the bottom of the cement isolation pier does not need to be processed independently, and the process is saved.
Description
Technical Field
The invention belongs to the technical field of processing of cement components, and particularly relates to a preparation method of a cement isolation pier.
Background
The cement road isolation pier is one of cement members, is used for separating opposite or same-direction traffic flows, forbids vehicles to turn left to enter and exit and arbitrarily passes through roads by pedestrians, and is generally arranged on a center line of the roads or a lane separation line. The side middle part of cement hard shoulder is provided with circular through-hole for the connecting rod of pegging graft to connect a plurality of cement hard shoulders. The cement isolation pier is usually manufactured by a mould, in the prior art, the preparation method of the cement isolation pier is complex, the bottom of the cement isolation pier needs to be separately processed after the preparation is finished, and the prepared cement isolation pier is easy to have a depression formed after the cement is compacted.
Disclosure of Invention
The invention aims to provide a preparation method of a cement isolation pier, which is simple in structure, can easily turn over a mould, and is time-saving and labor-saving.
Therefore, the technical scheme adopted by the invention is as follows: a preparation method of a cement hard shoulder comprises the following steps:
s1, assembling a die, wherein the die comprises a main body, side plates and mandrels, the two side plates are arranged on the left side surface and the right side surface of the main body to form a die cavity with an open upper end, and the two mandrels penetrate through a mandrel hole on the other side after penetrating through the die cavity from a mandrel hole on the side plate on one side, so that the mandrels are supported by the side plates;
s2, filling a mold cavity, wherein the mold further comprises an upper pressure plate, an arc groove is formed in the middle of the upper end of each side plate, an arc surface matched with the arc groove is formed in the bottom of the upper pressure plate, the mold cavity is filled with cement, the upper pressure plate is placed on the side plates on the left side and the right side until the bottom of the arc groove is filled, the arc surfaces are aligned with the arc grooves, the front side face and the rear side face of the upper pressure plate are higher than the side plates, a distance is formed between the front side face and the rear side face of the upper pressure plate and the front inner side face and the rear inner side face of the main body to form a feed opening, and cement is filled into the mold cavity;
s3, forming the isolation hole of the cement isolation pier, rotating the mandrel after filling cement and at intervals to ensure that the mandrel is not cemented in the cement isolation pier, and extracting the mandrel after at least 4 times of rotation;
s4, demolding the cement isolation pier, and demolding the cement isolation pier after filling cement for at least 20 hours to enable the cement isolation pier to be demolded from the mold;
and S5, painting, namely brushing white paint on the whole cement isolation pier, and brushing two red paints or blue paints which are vertically spaced on the front side surface and the rear side surface of the cement isolation pier according to the using position of the cement isolation pier.
Preferably, in the step S3, the mandrel is rotated after every 30 minutes.
Further preferably, be provided with the ring flange that is used for being connected with the curb plate on the side about the main part, all the other edges except the upper end set up the installation department on the curb plate, be provided with a plurality of first mounting holes on the installation department, be provided with the second mounting hole on the ring flange corresponding position, it is fixed through hasp locking between ring flange and the installation department.
Preferably, the lock catch is formed by bending a steel bar, the upper end of the lock catch is transversely provided with a connecting section for penetrating through the first mounting hole and the second mounting hole, the left end of the connecting section penetrates through the first mounting hole and then is provided with an anti-falling end in a bent mode, an acute angle formed between the anti-falling end and the connecting section is 0-5 degrees, the right end of the connecting section penetrates through the second mounting hole and then is adhered to the right side surface of the flange plate, the right side surface of the connecting section is inclined towards the front lower side to form a transition section, and the front end of the transition section bypasses the front side surfaces of the flange plate and the mounting part and then is adhered to the left side surface of the mounting part to extend to form a; in S1, during installation, the connecting section passes through the first installation hole and the second installation hole from right to left along the installation hole, and the locking section is downward by force, so that the locking section can be hooked on the front side faces of the flange plate and the installation part.
Preferably, two handrails formed by bending steel bars are arranged on the left side and the right side of the front side of the main body at intervals, the upper ends of the handrails are welded to the top of the main body and are arranged downwards to form a balance section, the lower end of the balance section is provided with an arc section facing the main body, the other end of the arc section is provided with a straight section inclining upwards, the other end of the straight section is welded at a position, close to the bottom, of the main body, and the upper ends of the handrails do not exceed the mounting part on the front side of the side plate; in S4, the concrete demolding method for the cement road barrier includes the steps of taking down the upper press plate, pushing the upper end of the mold forward to make the arc section contact with the ground, so that the mold is laid down along the arc section, holding the straight section of the handrail to lift the lower end of the mold upwards to turn over the lower end of the mold, striking the locking section downwards to make the lock catch rotate downwards along the axes of the first mounting hole and the second mounting hole, taking down the left side plate, and taking down the rest mold to the right to realize demolding.
Further preferably, the left end and the right end of the mandrel are provided with radial through holes which are convenient for the mandrel to rotate and take out, the distance between the radial through holes at the two ends is larger than that between the two side plates, the mandrel is a hollow cylinder, and in S3, when the mandrel is rotated, the reinforcing steel bars are inserted into the radial through holes to rotate.
The invention has the beneficial effects that:
(1) the last cement injection is carried out on the mould along the feeding ports left at the front side and the rear side of the upper end of the mould, the injection condition can be obviously observed, the complete coincidence of the cement injection condition and the mould is ensured, and after the cement is placed for a period of time, the cement becomes more compact due to gravity, a pit is formed at the upper end of the cement isolation pier, the cement can be added in time to fill the pit, and the size deviation of the finally formed cement isolation pier is prevented;
(2) the upper pressing plate is arranged on the die, and the bottom surface of the upper pressing plate is an arc surface, so that an arc groove which is convenient to move and prevent water accumulation is formed in the bottom of the cement isolation pier at the last forming position, the bottom of the cement isolation pier does not need to be processed independently, and the process is saved.
Drawings
Fig. 1 is a schematic structural view of a mold according to the present invention.
Fig. 2 is a schematic structural view of the main body of the present invention.
Fig. 3 is a schematic structural view of a side plate according to the present invention.
Fig. 4 is a schematic structural view of the latch of the present invention.
Fig. 5 is a front view of the present invention after the latch has been installed.
Fig. 6 is a right side view of the latch of the present invention.
Fig. 7 is a schematic view of the mold of the present invention after it is laid down.
Fig. 8 is a schematic view of the mold of the present invention after it has been turned over.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-8, the preparation method is realized based on a cement isolation pier mold, the cement isolation pier mainly comprises a main body 1, side plates 2, an upper pressure plate 3 and a mandrel 4, wherein the height of the side plates 2 is equal to that of the main body 1, and the two side plates 2 are respectively and correspondingly installed on the left side surface and the right side surface of the main body 1 and enclose a mold cavity with an open upper end.
Be provided with two core shaft holes 2a about the curb plate 2 is last, two dabbers 4 stretch out from the core shaft hole 2a of two blocks of curb plates after transversely passing the mould chamber, the upper end middle part of curb plate 2 is provided with arc groove 2b, the bottom of top board 3 be provided with arc groove 2b assorted arc surface 3a, when arc surface 3a pressed in arc groove 2b, the front and back both sides face of top board 3 all is higher than curb plate 2, and there is one section distance formation charge door A between the front and back both sides face of top board 3 and the main part 1 front and back medial surface.
For making things convenient for being connected between main part 1 and the curb plate 2, be provided with the ring flange 1c that is used for being connected with curb plate 2 on the side about main part 1, all the other edges except the upper end set up the installation department on curb plate 2, are provided with a plurality of first mounting holes 2c on the installation department, are provided with second mounting hole 1d on the ring flange 1c corresponds the position, and it is fixed through hasp 5 locking between ring flange 1c and the installation department.
When the main body 1 and the side plate 2 need to be opened, the front end of the locking section 5c is pushed upwards, the lock catch can be 5 rotated around the axes of the first mounting hole 2c and the second mounting hole 1d, so that the front end of the locking section 3 is separated from the front side surface of the flange plate 1c and the mounting part, the connecting section 5a is withdrawn along the first mounting hole 2c and the second mounting hole 1d, the lock catch 5 is taken out, and the main body 1 and the side plate 2 can be disassembled.
Set up the changeover portion 5b to the V type, and let locking section 5c set up along the line of second mounting hole 1d with changeover portion 5b front end for the changeover portion 5b and the locking section 5c of hasp 5 form the good triangle-shaped structure of stability, and can increase whole hasp 5's locking effect and intensity.
For making things convenient for the upset of whole mould, the interval is provided with two and is formed handrail 1a by the reinforcing bar bending about the front side of main part 1, the upper end welding of handrail 1a forms balanced section an at the top of main part 1 and downward setting, balanced section an's lower extreme is provided with the circular arc section b towards main part 1, circular arc section b's the other end is provided with the straight section c of tilt up, the other end welding of straight section c is in the position department that main part 1 is close to the bottom, handrail 1 a's upper end is no longer than the installation department 2a of 2 front sides of curb plates.
In order to facilitate the arrangement of the handrail 1a, a connecting plate 1b welded at the front and rear upper ends of the main body 1 is arranged between the two flange plates 1c, and the upper end of the handrail 1a is welded on the connecting plate 1 b.
When pushing forward the mould upper end, arc section b and ground contact to make the mould laid down along arc section b, the mould was supported on ground by the installation department of two blocks of curb plates 2 and the arc section b of handrail 1a this moment, held the straight section c of handrail 1a again and upwards exert oneself, enabled the mould to be overturned.
In order to facilitate the movement of the upper pressing plate 3, a lifting handle 3a is arranged in the middle of the upper end of the upper pressing plate 3, and the lifting handle 3a is arranged along the left-right direction.
For the better placing of top board 3 ability on two blocks of curb plates, the outside of circular arc groove 2b is provided with second reinforcing plate 2d, and the left and right sides of top board 3 can press on second reinforcing plate 2 d. Second reinforcing plate 2d is the circular arc board that sets up in the curb plate 2 outside, and the upper end of second reinforcing plate 2d is the plane, and both sides just flush with main part 1 inboard around the second reinforcing plate 2 d.
For making things convenient for dabber 4 downthehole rotation of dabber and taking out dabber 4, radial through-hole 4a that both ends all were provided with about dabber 4, and the distance of the radial through-hole 4a in both ends is greater than the distance between two blocks of curb plates 2. When the mandrel 4 is a hollow cylinder, the weight of the mandrel 4 can be reduced.
A preparation method of a cement hard shoulder comprises the following steps:
the method comprises the following steps that firstly, a die is assembled, two side plates 2 are arranged on the left side surface and the right side surface of a main body 1 to enable the two side plates to form a die cavity with an open upper end, two mandrels 4 penetrate through a mandrel hole 2a on one side plate 2 and then penetrate through the die cavity from the mandrel hole 2a on the other side, the mandrels 4 are supported by the side plates 2, when the main body is arranged with the side plates, a connecting section penetrates through a first mounting hole 2c and a second mounting hole 1d along the mounting holes from the right side 5a to the left side, and then a locking section 5c is downward due to force, so that the locking section 5c can be hooked reversely on the front side surfaces of a flange plate 1c and a mounting;
secondly, filling a mold cavity, filling the mold cavity with cement, placing the upper pressing plate 3 on the side plates 2 on the left side and the right side when the bottom of the arc groove 2b is filled, aligning the arc surface 3a with the arc groove 2b, and filling the mold cavity with cement along the feeding port A until the cement is flush with the upper end 1 of the main body;
thirdly, forming the isolating hole of the cement isolating pier, after filling cement, rotating the mandrel 4 every 30 minutes to ensure that the mandrel 4 is not cemented in the cement isolating pier, drawing out the mandrel 4 after at least 4 times of rotation, and inserting the reinforcing steel bar into the radial through hole 4a to rotate when rotating the mandrel 4;
fourthly, demolding the cement isolation pier, and when the cement becomes tighter and is sunken in real time under the action of gravity, timely adding the cement along the feeding port A for filling the sunken part; after filling cement for at least 20 hours, demolding the cement isolation pier to enable the cement isolation pier to be separated from the mold, wherein the concrete demolding method comprises the steps of firstly taking down the upper pressing plate 3, then pushing the upper end of the mold forwards to enable the arc section b to be in contact with the ground, so that the mold is laid down along the arc section b, then holding the straight section c of the handrail 1a to lift the lower end of the mold upwards to enable the lower end of the mold to be turned upwards, then knocking the locking section 5c downwards to enable the lock catch 5 to rotate downwards along the axes of the first mounting hole 2c and the second mounting hole 1d, so that the side plate 2 on the left side is taken down, and then taking down the rest mold to the right to achieve demolding;
and fifthly, painting, namely brushing white paint on the whole cement isolation pier, and brushing two red paints or blue paints which are vertically spaced on the front side surface and the rear side surface of the cement isolation pier according to the using position of the cement isolation pier.
Claims (6)
1. The preparation method of the cement hard shoulder is characterized by comprising the following steps:
s1, assembling a die, wherein the die comprises a main body (1), side plates (2) and mandrels (4), the two side plates (2) are arranged on the left side surface and the right side surface of the main body (1) to form a die cavity with an open upper end, and the two mandrels (4) penetrate through the die cavity from a mandrel hole (2a) on one side plate (2) and then penetrate out from a mandrel hole (2a) on the other side plate to enable the mandrels (4) to be supported by the side plates (2);
s2, filling a mold cavity, wherein the mold further comprises an upper pressure plate (3), an arc groove (2b) is formed in the middle of the upper end of each side plate (2), an arc surface (3a) matched with the arc groove (2b) is formed in the bottom of the upper pressure plate (3), the mold cavity is filled with cement, the upper pressure plate (3) is placed on the side plates (2) on the left side and the right side when the bottom of the arc groove (2b) is filled, the arc surface (3a) is aligned with the arc groove (2b), the front side face and the rear side face of the upper pressure plate (3) are higher than the side plates (2), a distance is formed between the front side face and the rear side face of the upper pressure plate (3) and the front side face and the rear side face of the main body (1) to form a feeding port (A), and cement is filled into the mold cavity along the feeding port (A) until the;
s3, forming the isolation hole of the cement isolation pier, rotating the mandrel (4) after filling cement and at intervals to ensure that the mandrel (4) is not cemented in the cement isolation pier, and drawing out the mandrel (4) after rotating for at least 4 times;
s4, demolding the cement isolation pier, and demolding the cement isolation pier after filling cement for at least 20 hours to enable the cement isolation pier to be demolded from the mold;
and S5, painting, namely brushing white paint on the whole cement isolation pier, and brushing two red paints or blue paints which are vertically spaced on the front side surface and the rear side surface of the cement isolation pier according to the using position of the cement isolation pier.
2. The method for manufacturing a cement hard shoulder as claimed in claim 1, wherein: in the step S3, after every 30 minutes, the mandrel (4) is rotated.
3. The method for manufacturing a cement hard shoulder as claimed in claim 1, wherein: be provided with on the side about main part (1) and be used for flange dish (1c) be connected with curb plate (2), all the other edges except the upper end set up the installation department on curb plate (2), be provided with a plurality of first mounting holes (2c) on the installation department, be provided with second mounting hole (1d) on flange dish (1c) the position that corresponds, it is fixed through hasp (5) locking between flange dish (1c) and the installation department.
4. The method for manufacturing a cement hard shoulder as claimed in claim 3, wherein: the lock catch (5) is formed by bending a steel bar, the upper end of the lock catch (5) is transversely provided with a connecting section (5a) for penetrating through a first mounting hole (2c) and a second mounting hole (1d), the left end of the connecting section (5a) is provided with an anti-falling end (d) by bending after penetrating through the first mounting hole (2c), an acute angle formed between the anti-falling end (d) and the connecting section (5a) is 0-5 degrees, the right end of the connecting section (5a) penetrates through the second mounting hole (1d) and then is attached to the right side face of a flange plate (1c), the right side face of the connecting section inclines forwards and downwards to form a transition section (5b), and the front end of the transition section (5b) bypasses the flange plate (1c) and the front side face of the mounting part and then is attached to the left side face of the mounting part to form a locking section (5 c); in S1, during installation, the connecting section passes through the first installation hole (2c) and the second installation hole (1d) from the right side (5a) to the left side along the installation hole, and the locking section (5c) is forced to face downwards, so that the locking section (5c) can be hooked on the front side faces of the flange plate (1c) and the installation part reversely.
5. The method for manufacturing a cement hard shoulder as claimed in claim 4, wherein: two handrails (1a) formed by bending steel bars are arranged on the left side and the right side of the front side of the main body (1) at intervals, the upper ends of the handrails (1a) are welded to the top of the main body (1) and are arranged downwards to form a balance section (a), the lower end of the balance section (a) is provided with an arc section (b) facing the main body (1), the other end of the arc section (b) is provided with a straight section (c) which inclines upwards, the other end of the straight section (c) is welded to the position, close to the bottom, of the main body (1), and the upper end of the handrail (1a) is not larger than an installation part (2a) on the front side of; in S4, the concrete demoulding method of the cement isolation pier is that the upper pressing plate (3) is taken down firstly, then the upper end of the mould is pushed forwards, the arc section (b) is in contact with the ground, so that the mould is laid down along the arc section (b), then the straight section (c) of the handrail (1a) is held, the lower end of the mould is lifted upwards, the lower end of the mould is turned upwards, at the moment, the locking section (5c) is knocked downwards, the lock catch (5) is enabled to rotate downwards along the axes of the first mounting hole (2c) and the second mounting hole (1d), so that the left side plate (2) is taken down, then the rest mould is taken down rightwards, and demoulding is achieved.
6. The method for manufacturing a cement hard shoulder as claimed in claim 1, wherein: the utility model discloses a steel bar reinforced concrete core shaft, including dabber (4), dabber (4) control both ends all are provided with radial through-hole (4a) convenient to dabber (4) rotation and take out, and the distance of the radial through-hole in both ends (4a) is greater than the distance between two blocks of curb plates (2), dabber (4) adopt hollow drum, in S3, when rotating dabber (4), insert radial through-hole (4a) with the reinforcing bar, rotate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623457.XA CN112776127B (en) | 2020-12-31 | 2020-12-31 | Preparation method of cement isolation pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011623457.XA CN112776127B (en) | 2020-12-31 | 2020-12-31 | Preparation method of cement isolation pier |
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| CN112776127A true CN112776127A (en) | 2021-05-11 |
| CN112776127B CN112776127B (en) | 2022-04-01 |
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