CN114481849B - Vibrating system for bent cap construction - Google Patents
Vibrating system for bent cap construction Download PDFInfo
- Publication number
- CN114481849B CN114481849B CN202210157975.XA CN202210157975A CN114481849B CN 114481849 B CN114481849 B CN 114481849B CN 202210157975 A CN202210157975 A CN 202210157975A CN 114481849 B CN114481849 B CN 114481849B
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- Prior art keywords
- angle beam
- vibrating
- hydraulic cylinder
- pump head
- hinged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003248 secreting effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
- E04G21/08—Internal vibrators, e.g. needle vibrators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of bridge construction, in particular to a vibrating system for cap beam construction, which comprises a directional vibrating unit, a vibrating plate and a vibrating plate, wherein the directional vibrating unit comprises a horizontally arranged angle beam, sealing sheets are respectively arranged at two ends of the angle beam, an opening of the angle beam is arranged downwards, and the vibrating plate is arranged in the angle beam and is hinged and matched with the top of the angle beam through one side; a hydraulic cylinder is hinged and matched between one side of the vibrating plate far away from the hinge part and the angle beam; the vibration generating unit is composed of a pump head and a variable frequency motor for driving the pump head, and the pump head is connected with the hydraulic cylinder through a hydraulic pipe. The invention provides a vibrating system for capping beam construction, which solves the problem that a common large vibrator cannot play a role in capping beam concrete construction, and a long-strip-shaped angle beam can adapt to the characteristic of a narrow joint at the top of a capping beam, so that a plurality of small vibrators are not required to work simultaneously, and the labor investment is saved.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a vibrating system for capping beam construction.
Background
In the existing bridge upright post and bent cap construction, mainly manual binding of reinforcing steel bars and on-site concrete are adopted, wherein in the concrete pouring construction, due to hydration reaction of cement, a plurality of bubbles, water vapor and the like can be generated in the concrete member in the concrete in the solidification process, and as a result, the phenomena of honeycomb, pore and the like can be formed in the concrete and on the outer surface, the strength of the concrete member is directly reduced, vibration is to eliminate the bubbles and pores in the concrete, the compactness of the concrete is improved, if the vibration frequency, the vibration amplitude, the exciting force and the vibration time are scientific and reasonable, the vibration effect can be effectively improved, the friction resistance among materials in the concrete is overcome, and the cement, the sand, the aggregate and the reinforcing steel bars in the concrete can be organically combined, so that the purpose of improving the compactness of the concrete is achieved. If the vibration parameters are unreasonable, the density of the concrete is not high by a light person, the strength of the concrete is affected, and the segregation phenomenon of the concrete is caused by a heavy person, namely, the concrete segregation is caused by unreasonable vibration parameters, so that the heavy particles in the concrete are influenced by dead weight to sink, the slurry with light specific gravity floats to the surface to form a water-secreting layer, thereby seriously affecting the quality of the concrete member, and reducing the strength of the concrete member.
Disclosure of Invention
The invention provides a vibrating system for capping beam construction, which solves the problem that a common large vibrator cannot play a role in capping beam concrete construction, and a long-strip-shaped angle beam can adapt to the characteristic of a narrow joint at the top of a capping beam, so that a plurality of small vibrators are not required to be used for working simultaneously, the labor investment is saved, and meanwhile, the state of the concrete after vibrating can be accurately known through a display unit, the risk problem can be timely solved and whether the concrete reaches a vibrating standard can be judged, and the working efficiency and the construction quality are improved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the vibrating system for the capping beam construction comprises a directional vibrating unit, a vibrating plate and a vibrating plate, wherein the directional vibrating unit comprises a horizontally arranged angle beam, sealing sheets are respectively arranged at two ends of the angle beam, an opening of the angle beam is downwards arranged, and the vibrating plate is arranged in the angle beam and is hinged and matched with the top of the angle beam through one side; a hydraulic cylinder is hinged and matched between one side of the vibrating plate far away from the hinge part and the angle beam; the vibration generating unit consists of a pump head and a variable frequency motor for driving the pump head, and the pump head is connected with the hydraulic cylinder through a hydraulic pipe; the variable frequency motor is provided with a controller; the display unit comprises a section of transparent pipe which is vertically arranged and a valve group which is arranged at the bottom of the transparent pipe; the top of angle beam is equipped with the interface that inside link up, display element pass through the valves with the interface intercommunication.
Preferably, the valve group is sequentially provided with a floating valve and a one-way valve from bottom to top.
Preferably, the vibrating plates are arranged in pairs, and the tops of the two vibrating plates are mutually hinged and matched; the bottom of each vibrating plate is respectively hinged and matched with the bottom of the angle beam through a first hydraulic cylinder, and each first hydraulic cylinder is respectively connected with the pump head through a hydraulic pipe.
Preferably, a floating shaft is arranged in the angle beam along the length direction, a plurality of shaft sleeves are nested in the floating shaft, two sides of each shaft sleeve are respectively hinged and matched with the inner wall of the angle beam through a second hydraulic cylinder, and one side, far away from the first hydraulic cylinder, of each vibration plate is mutually hinged through the floating shaft; each second hydraulic cylinder is connected with the pump head through an electromagnetic valve; the electromagnetic valve is electrically connected with the controller.
Preferably, the pump head is provided with a hydraulic cylinder and a plunger matched in the hydraulic cylinder, and the variable frequency motor drives the plunger to reciprocate in the hydraulic cylinder through a crank connecting rod mechanism.
Preferably, the crank-link mechanism comprises a crankshaft, a connecting rod, a swinging arm and an electric push rod; the swing arm is matched with a crank throw of the crankshaft through a middle shaft hole, any one end of the swing arm is in hinged fit with the plunger through the connecting rod, the telescopic end of the electric push rod is in hinged fit with one end, far away from the connecting rod, of the swing arm, and one end, far away from the swing arm, of the electric push rod is in hinged fit with the pump head shell; the electric push rod is electrically connected with the controller.
Preferably, a plurality of partition boards are arranged in the angle beam at intervals along the length direction, the angle beam is separated into a plurality of independent spaces by the partition boards, and display units are respectively arranged in the independent spaces.
Preferably, the transparent tube is filled with transparent liquid; and the top of the transparent tube is provided with a sealing cover.
The invention has the beneficial effects that the problem that a common large vibrator cannot play a role in the construction of the capping beam concrete is solved, the long-strip-shaped angle beam can adapt to the characteristic of a narrow joint at the top of the capping beam, so that a plurality of small vibrators are not required to be used for working simultaneously, the labor investment is saved, meanwhile, the state of the concrete after the vibration can be accurately known through the display unit, the risk problem can be timely solved, and whether the concrete reaches the vibration standard or not is judged, so that the working efficiency and the construction quality are improved. In actual vibrating operation, firstly, clear water is injected into the transparent pipe, along with the vibrating operation, air bubbles separated out from concrete are accumulated in the angle beam and overflow through the floating valve, and are upwards discharged after passing through the one-way valve, so that visible air bubbles appear in the clear water of the transparent pipe, along with the continuous vibrating operation, after the air bubbles do not appear, the concrete is completely vibrated, and a detection standard is provided for the vibrating operation of the concrete. In addition, the two vibrating plates vibrate at the two sides of the inside of the angle beam simultaneously, so that the vibrating efficiency is improved, the vibrating balance is ensured, and the angle beam is not easy to incline towards one side in the vibrating process. The controller is used for controlling the electromagnetic valve, so that multidimensional vibration is realized on the vibration plates up and down, and meanwhile, the controller can be used for managing the telescopic position of the second hydraulic cylinder, so that the position change of the floating shaft in the angle beam is realized, and the vibration effect of the two vibration plates is improved. The electric push rod is controlled in a telescopic mode through the controller, so that the formation change of the plunger is realized, the amplitude change of the vibration plate can be realized, and concrete vibration with different aggregate ratios can be dealt with.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the internal structure of an angle beam according to the present invention;
FIG. 2 is a schematic diagram of a second hydraulic cylinder arrangement according to the present invention;
FIG. 3 is a schematic diagram showing the internal structure of the display unit according to the present invention;
Fig. 4 is a diagram showing a pump head structure of the vibration generating unit of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
According to the vibration system for construction of the bent cap shown in fig. 1 and 2, the vibration system comprises a directional vibration unit, a vibration plate 3 and a vibration plate, wherein the directional vibration unit comprises a horizontally arranged angle beam 1, the angle beam 1 is similar to a triangular iron structure and is composed of two steel plates vertically connected, sealing sheets 2 are respectively arranged at two ends of the angle beam 1, the opening of the angle beam 1 is downwards arranged, and the vibration plate 3 is arranged inside the angle beam 1 and is hinged and matched with the top of the angle beam 1 through one side; a hydraulic cylinder is hinged and matched between one side of the vibration plate 3 far away from the hinge part and the angle beam 1; the vibration generating unit consists of a pump head 4 and a variable frequency motor 5 for driving the pump head 4, and the pump head 4 is connected with the hydraulic cylinder through a hydraulic pipe; the variable frequency motor 5 is provided with a controller; the display unit comprises a section of transparent tube 6 which is vertically arranged and a valve group which is arranged at the bottom of the transparent tube 6; the top of the angle beam 1 is provided with an interface communicated with the inside, and the display unit is communicated with the interface through the valve group.
Through above-mentioned setting, solved in the construction of bent cap concrete, the problem that the large-scale vibrator of using always can't exert an effect, long banding angle beam 1 can adapt to the characteristic of the narrow and small seam in bent cap top, consequently need not to use a plurality of small-size vibrators simultaneous working, saved the manpower input, can accurately know the concrete state after vibrating through the display element simultaneously, can timely risk problem and judge whether concrete reaches the vibration standard, consequently improved work efficiency and construction quality.
According to the figure 3, the valve group is provided with a float valve 7 and a one-way valve 8 from bottom to top. In actual vibrating operation, firstly, clear water is injected into the transparent pipe 6, along with the vibrating operation, air bubbles separated out from concrete are accumulated in the angle beam 1 and overflow through the floating valve 7, and are discharged upwards after passing through the one-way valve 8, so that visible air bubbles appear in the clear water of the transparent pipe 6, along with the continuous vibrating operation, after the air bubbles do not appear, the concrete is completely vibrated, and a detection standard is provided for the vibrating operation of the concrete.
As a preferred embodiment, the vibrating plates 3 are arranged in pairs, and the tops of the two vibrating plates 3 are mutually hinged and matched; the bottom of each vibration plate 3 is respectively in hinged fit with the bottom of the angle beam 1 through a first hydraulic cylinder 9, and each first hydraulic cylinder 9 is respectively connected with the pump head 4 through a hydraulic pipe.
In this setting, vibrate simultaneously in the inside both sides of angle beam 1 through two vibrating plates 3 to not only improved vibration efficiency, still guaranteed the vibration equilibrium, make angle beam 1 be difficult for towards one side slope in the vibration in-process.
In order to further optimize the scheme, a floating shaft 10 is arranged in the angle beam 1 along the length direction, a plurality of shaft sleeves 11 are nested in the floating shaft 10, two sides of each shaft sleeve 11 are respectively hinged and matched with the inner wall of the angle beam 1 through a second hydraulic cylinder 12, and one side, away from the first hydraulic cylinder 9, of each vibration plate 3 is mutually hinged through the floating shaft 10; each second hydraulic cylinder 12 is connected with the pump head 4 through an electromagnetic valve; the electromagnetic valve is electrically connected with the controller.
The controller controls the electromagnetic valve to enable the vibration plates 3 to vibrate vertically in multiple dimensions, and meanwhile the controller can manage the telescopic position of the second hydraulic cylinder 12 to realize the position change of the floating shaft 10 in the angle beam 1, so that the vibration effect of the two vibration plates 3 is improved.
For improving functions, the pump head 4 is provided with a hydraulic cylinder and a plunger 13 matched in the hydraulic cylinder, and the variable frequency motor 5 drives the plunger 13 to reciprocate in the hydraulic cylinder through a crank connecting rod 15 mechanism.
According to the illustration in fig. 4, the crank-link 15 mechanism comprises a crankshaft 14, a link 15, a swing arm 16, and an electric push rod 17; the swing arm 16 is matched on a crank of the crankshaft 14 through a middle shaft hole, any end of the swing arm 16 is in hinged fit with the plunger 13 through the connecting rod 15, a telescopic end of the electric push rod 17 is in hinged fit with one end of the swing arm 16 away from the connecting rod 15, and one end of the electric push rod 17 away from the swing arm 16 is in hinged fit with the shell of the pump head 4; the electric push rod 17 is electrically connected with the controller.
In this arrangement, the controller controls the expansion and contraction of the electric push rod 17, thereby realizing the formation change of the plunger 13, so that the amplitude change of the vibration plate 3 can be realized, and the concrete vibration with different aggregate ratios can be dealt with.
In order to further improve the resolution ratio, a plurality of partition boards are arranged in the angle beam 1 at intervals along the length direction and are separated into a plurality of independent spaces by the partition boards, and display units are respectively arranged in the independent spaces.
Through the arrangement, each display unit can display the concrete segregation states of a plurality of sections in the vibrating process, so that basis is provided for targeted processing.
In addition, transparent liquid is filled in the transparent tube 6; and the top of the transparent tube 6 is provided with a sealing cover 19.
The sealing cap 19 prevents the transparent liquid from evaporating or leaking, thus ensuring the accuracy of the status display.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a vibrating system that bent cap construction was used which characterized in that includes:
The directional vibrating unit comprises a horizontally arranged angle beam, sealing sheets are respectively arranged at two ends of the angle beam, an opening of the angle beam is downwards arranged, and the directional vibrating unit further comprises a vibrating plate which is arranged inside the angle beam and is hinged and matched with the top of the angle beam through one side; a first hydraulic cylinder is hinged and matched between one side of the vibration plate far away from the hinge part and the angle beam;
The vibration generating unit consists of a pump head and a variable frequency motor for driving the pump head, and the pump head is connected with the hydraulic cylinder through a hydraulic pipe; the variable frequency motor is provided with a controller;
The display unit comprises a section of transparent pipe which is vertically arranged, and a valve group which is arranged at the bottom of the transparent pipe, wherein the valve group is sequentially provided with a floating valve and a one-way valve from bottom to top, transparent liquid is filled in the transparent pipe, and the top of the transparent pipe is provided with a sealing cover;
The top of the angle beam is provided with an interface communicated with the inside, the display unit is communicated with the interface through the valve group, a plurality of partition boards are arranged in the angle beam at intervals along the length direction and are separated into a plurality of independent spaces through the partition boards, and the display unit is respectively arranged in each independent space;
the vibrating plates are arranged in pairs, and the tops of the two vibrating plates are mutually hinged and matched; the bottom of each vibrating plate is respectively hinged and matched with the bottom of the angle beam through a first hydraulic cylinder, and each first hydraulic cylinder is respectively connected with the pump head through a hydraulic pipe; a floating shaft is arranged in the angle beam along the length direction, a plurality of shaft sleeves are nested in the floating shaft, two sides of each shaft sleeve are respectively hinged and matched with the inner wall of the angle beam through a second hydraulic cylinder, and one side, far away from the first hydraulic cylinder, of each vibration plate is mutually hinged through the floating shaft; each second hydraulic cylinder is connected with the pump head through an electromagnetic valve; the electromagnetic valve is electrically connected with the controller.
2. The vibrating system for bent cap construction according to claim 1, wherein: the pump head is provided with a hydraulic cylinder and a plunger matched in the hydraulic cylinder, and the variable frequency motor drives the plunger to reciprocate in the hydraulic cylinder through a crank connecting rod mechanism.
3. The vibrating system for bent cap construction according to claim 2, wherein: the crank and connecting rod mechanism comprises a crankshaft, a connecting rod, a swinging arm and an electric push rod; the swing arm is matched with a crank throw of the crankshaft through a middle shaft hole, any one end of the swing arm is in hinged fit with the plunger through the connecting rod, the telescopic end of the electric push rod is in hinged fit with one end, far away from the connecting rod, of the swing arm, and one end, far away from the swing arm, of the electric push rod is in hinged fit with the pump head shell; the electric push rod is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157975.XA CN114481849B (en) | 2022-02-21 | 2022-02-21 | Vibrating system for bent cap construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157975.XA CN114481849B (en) | 2022-02-21 | 2022-02-21 | Vibrating system for bent cap construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114481849A CN114481849A (en) | 2022-05-13 |
| CN114481849B true CN114481849B (en) | 2024-06-07 |
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ID=81481768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157975.XA Active CN114481849B (en) | 2022-02-21 | 2022-02-21 | Vibrating system for bent cap construction |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100819379B1 (en) * | 2007-08-17 | 2008-04-04 | 이학곤 | Concrete construction using hydraulic system and anti-noise non-vibration manufacturing method of concrete construction |
| CN205153555U (en) * | 2015-11-11 | 2016-04-13 | 张启志 | Construction is with novel concrete stick that vibrates |
| CN213476652U (en) * | 2020-10-22 | 2021-06-18 | 梁建 | Concrete vibrator for bridge construction |
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
| CN214786086U (en) * | 2021-04-14 | 2021-11-19 | 四川爱德中创建设工程有限公司 | Large tracts of land concrete placement is with device that vibrates |
| CN215038462U (en) * | 2021-06-15 | 2021-12-07 | 中国建筑第八工程局有限公司 | Concrete vibrating device |
| CN215631726U (en) * | 2021-06-30 | 2022-01-25 | 中国二冶集团有限公司 | Constructional column perfusion vibrating device |
-
2022
- 2022-02-21 CN CN202210157975.XA patent/CN114481849B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100819379B1 (en) * | 2007-08-17 | 2008-04-04 | 이학곤 | Concrete construction using hydraulic system and anti-noise non-vibration manufacturing method of concrete construction |
| CN205153555U (en) * | 2015-11-11 | 2016-04-13 | 张启志 | Construction is with novel concrete stick that vibrates |
| CN213476652U (en) * | 2020-10-22 | 2021-06-18 | 梁建 | Concrete vibrator for bridge construction |
| CN214786086U (en) * | 2021-04-14 | 2021-11-19 | 四川爱德中创建设工程有限公司 | Large tracts of land concrete placement is with device that vibrates |
| CN113323400A (en) * | 2021-05-24 | 2021-08-31 | 合肥工业大学 | Concrete vibrating device and using method thereof |
| CN215038462U (en) * | 2021-06-15 | 2021-12-07 | 中国建筑第八工程局有限公司 | Concrete vibrating device |
| CN215631726U (en) * | 2021-06-30 | 2022-01-25 | 中国二冶集团有限公司 | Constructional column perfusion vibrating device |
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| Publication number | Publication date |
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| CN114481849A (en) | 2022-05-13 |
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