CN211948274U - Pontoon trash holding float with weak section structure - Google Patents
Pontoon trash holding float with weak section structure Download PDFInfo
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- CN211948274U CN211948274U CN201922488409.3U CN201922488409U CN211948274U CN 211948274 U CN211948274 U CN 211948274U CN 201922488409 U CN201922488409 U CN 201922488409U CN 211948274 U CN211948274 U CN 211948274U
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Abstract
The utility model provides a pontoon trash holding float with weak joints, which comprises a pontoon box, a pontoon box at the end part, a common connecting piece, a weak joint connecting piece and a flexible steel cable; the two sections of pontoon pontoons at the middle part are hinged through the weak joint connecting piece, and the flexible steel cable is connected between the two sections, the tensile force that the flexible steel cable can bear is greater than the weak joint connecting piece, and the strength of the common connecting piece is greater than the weak joint connecting piece. The utility model relates to a wharf boat blocks dirty and floats can only change traditional wharf boat and block dirty connection structure who floats one of them festival, increases weak festival connecting piece and cable wire, can make to block dirty and float fracture position controllable, and does not take place to break away from. The safety of structures such as a water inlet, a trash rack and the like is ensured.
Description
Technical Field
The utility model relates to a wharf boat blocks dirty floating structure with weak festival. The sewage blocking and floating structure is suitable for hydroelectric engineering with more floating objects and high safety requirement.
Background
In water conservancy and hydropower engineering, particularly after a hydropower station is built for water storage, floaters such as plant roots, animal carcasses, foamed plastics, household garbage and the like need to be blocked outside a water inlet, so that pollutants are prevented from entering a hydraulic turbine unit, and the normal operation of the hydraulic turbine unit is ensured. In the conventional method, besides the trash rack arranged at the water inlet, a trash float is also arranged at a distance in front of the water inlet. The floating objects can be separated outside the trash rack, the number and the size of the floating objects entering the trash rack are reduced, the trash removal pressure in front of the trash rack is reduced, and the continuous operation of the water turbine is guaranteed. When a large amount of floating objects are accumulated before the trash holding float, the floating objects need to be discharged through flood discharge facilities or be intensively cleaned.
The floating type trash floating device commonly used at present mainly comprises a steel wire cable trash floating body, a fiber cable trash floating body and a wharf boat trash floating body 3 types, wherein the steel wire cable trash floating body generally comprises a steel wire cable, a metal buoyancy tank, a fiber net, a pendant and the like, and the steel wire rope is used as a main bearing structure. The steel wire cable blocks that dirty to float flexible better, can remove to block dirty to float and arrange and float the operation. However, the steel wire cable has a corrosion resistance greatly affected by the steel wire base material, is easy to break by strand scattering after repeated movement, and has a limited service life. The fiber rope trash-blocking float generally comprises a fiber cable, a nonmetal buoyancy tank, a fiber net and a pendant, wherein the fiber cable is used as a main bearing structure. The movable trash-blocking float has the advantages of being simple, light and compact in structure, good in flexibility, and capable of moving trash-blocking floats for floating operation. However, the fiber cable is easy to age and damage in the open air environment, has short service life and needs to be replaced frequently. The steel wire cable and the fiber cable trash-floating block are generally used in hydropower engineering with less floaters and not very high requirements on the service life of the trash-floating block structure.
The pontoon trash holding float is composed of a section of metal pontoon, a metal grid is hung under the pontoon, and the sections are connected by hinges. The wharf boat blocks dirty floating arrangement and generally needs to set up two or more anchor blocks, and the tip wharf boat adopts the pulley to be connected with the track groove of anchor block, guarantees to block dirty floating and can freely go up and down along with the water level change. The pontoon trash holding floats the safety margin big, and trash holding effect is good, long service life. The method is generally used in hydropower engineering with more floating objects and high requirement on the service life of the structure. Because the tip is fixed in the track groove, the wharf boat blocks that the dirt floats and generally can not block that the dirt floats through removing and float the operation of arranging, need arrange to float the building or coordinate the specialty to arrange to float the ship and arrange to float. Because the wharf boat volume is generally great, if the floating object is gathered too much before the trash holding floats, the wharf boat joint is broken under the extreme working condition, and the dropped wharf boat or boats can form great threat to the safety of structures such as a water inlet, a trash holding grid, a dam gate slot and the like.
Therefore, for the pontoon to block dirty operation of floating more safe and reliable, need design a structure, eliminate because of the floater is too much to lead to blocking dirty the safe threat that the breakage of floating, pontoon break away from and bring.
SUMMERY OF THE UTILITY MODEL
In order to eliminate the pontoon trash float and break the security threat of destruction to water inlet, trash rack isotructure under extreme operating mode, the utility model aims at providing a reliable structure for the pontoon trash float can break off at the assigned position under receiving the extreme load condition for the pontoon trash float after the disconnection does not break away from, thereby under the prerequisite of the effect is floated in the block that maintains the pontoon trash float, increases structural security, avoids dam, water inlet and trash rack to receive the destruction.
In order to realize the above object, the utility model discloses the technical scheme who adopts is:
a pontoon trash holding float with weak joints is characterized by comprising a pontoon floating box, an end pontoon floating box, a common connecting piece, a weak joint connecting piece and a flexible steel cable; the two sections of pontoon pontoons at the middle part are hinged through the weak joint connecting piece, and the flexible steel cable is connected between the two sections, the tensile force that the flexible steel cable can bear is greater than the weak joint connecting piece, and the strength of the common connecting piece is greater than the weak joint connecting piece.
Because the tensile capacity of the weak joint connecting piece is smaller than that of the common connecting piece, when the floating object exceeds the standard, the connecting piece between the pontoon boxes is pulled, and the tensile force borne by the weak joint connecting piece firstly reaches the limit value and is damaged, so that the fracture position of the trash holding buoy is ensured to be controllable.
The water flow and the floaters tighten the trash float to one side of the water inlet, the thrust borne by the trash float can be simplified into uniform load along the projection direction of the trash float span (or simplified into uniform load along the length of the trash float unit), and the shape formed by the trash float is similar to a parabola arch (or a catenary arch). When blocking dirty the breakage back of floating, the weak section connecting piece is replaced to flexible cable wire and is born the pulling force, and the length ratio of flexible cable wire is longer than the interval that adopts between two wharf boat pontoons of weak section connecting piece articulated, and the axis that blocks dirty floating is elongated, blocks dirty rise increase of floating the pitch arc, and rise span ratio increase, then the arch ring internal force reduces. Simultaneously, the torque between the pontoons is released because the steel cable replaces a rigid connecting piece. The internal force between the floating pontoons for blocking sewage is redistributed, the pulling force between each pontoon is smaller than that before the fracture, and the torsion condition is relieved. Thereby guaranteeing that other connection points are not damaged and the pontoon is not separated after the trash block float is broken at the weak joint. This provides conditions for timely cleaning of the floating objects.
The pontoon of the pontoon is articulated with the pontoon of the end part pontoon, and the pontoon is articulated with the adjacent two sections except adopting the weak section connecting piece to articulate through the ordinary connecting piece between the pontoon of the pontoon.
Preferably, the pontoon floating boxes at two sides of the relatively stressed large position in the middle of the trash holding float are hinged through the weak joint connecting piece.
Preferably, the length of the flexible steel cable is far greater than the distance between two pontoon units hinged by a weak joint connecting piece.
Preferably, the two pontoon sections in the middle are hinged and connected with the flexible steel cable through the weak joint connecting piece, and the other pontoon sections are hinged through the common connecting piece.
Preferably, a plurality of weak joint connecting piece spare parts are prepared, and repair and replacement after the weak joint is broken are facilitated.
Preferably, a tension sensor and a data transmission device can be installed on the flexible steel cable, so that the stress condition of the steel cable can be conveniently tracked in real time after the trash-blocking float is broken.
By the structure, the utility model relates to a wharf boat blocks dirty cursory can only change traditional wharf boat and block dirty connection structure who floats one of them festival, increases weak festival connecting piece and cable wire, can make and block dirty cursory rupture position controllable, and does not take place to break away from. The safety of structures such as a water inlet, a trash rack and the like is ensured.
The present invention will be further explained with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the trash float of the present invention before fracture;
FIG. 2 is a schematic view of an embodiment of the present invention showing a state of use after fracture of the trash float;
FIG. 3 is a diagram of a generic connector structure according to one embodiment of the present invention;
fig. 4 is a diagram of a weak link according to an embodiment of the present invention.
In the figure: 1-pontoon of pontoon; 2-special buoyancy tanks at the ends; 3-common connecting pieces; 4-a weak link connection; 5-a flexible steel cable; 6-common shaft lever; 7-weak axle.
Detailed Description
Reference is made to the accompanying drawings. The utility model discloses a wharf boat who takes weak festival blocks dirty float, mainly by a plurality of ordinary wharf boat flotation tanks 1, tip wharf boat flotation tank 2, the ordinary connecting piece 3 between the wharf boat, weak festival connecting piece 4 and flexible steel cable 5 are constituteed, wharf boat flotation tank 1, the structure of 2 itself contains the steelframe, the flotation pontoon, the metal grid, the railing etc., these structures are attached to the wharf boat, ordinary connecting piece 3 and weak festival connecting piece 4's articulated ordinary axostylus axostyle 6 and weak axostylus axostyle 7 of adopting respectively, can be that the ordinary axostylus axostyle 6 of diameter ratio of weak axostylus axostyle 7 is thinner.
The usable pulley of the landing stage at block dirty float both ends is connected with the track groove of anchor block, conveniently blocks dirty float wholly and float along with reservoir water level fluctuation. The connecting pieces are hinged between the end part pontoon and the common pontoon, and between the common pontoon and the common pontoon, so that the pontoon can swing along with water flow.
The power generation diversion water flow enters the water inlet from the reservoir through the dirt blocking float, and under the combined action of water flow, floating objects, wind waves and the like, the dirt blocking float between the fixed piers forms a parabola shape (or a catenary shape), as shown in fig. 1 and 2. These external loads can simplify to even effect in the pontoon, and the connecting piece between the pontoon bears the pulling force. The connecting piece firmly welds on the wharf boat steelframe, and the axostylus axostyle in the middle of the connecting piece bears the shear force. The axostylus axostyle intensity of weak festival department is less than the axostylus axostyle intensity of ordinary connecting piece department, blocks that the dirt floats when pulling force reaches a definite value, and the axostylus axostyle of weak festival department is at first sheared and is destroyed, blocks that the dirt floats and is split in weak festival department.
When the trash rack is broken at the weak joint, the originally loose flexible steel cable is tensioned by tensile force. The flexible steel cable is subjected to tension. And meanwhile, the axis of the trash floating block is lengthened, the rise of the trash floating arc line is increased, the rise-span ratio is increased, and the internal force of the arch ring is reduced. Simultaneously, the torque between the pontoons is released because the steel cable replaces a rigid connecting piece. The internal force between the floating pontoons for blocking sewage is redistributed, the pulling force between each pontoon is smaller than that before the fracture, and the torsion condition is relieved. Thereby guaranteeing that other connection points are not damaged and the pontoon is not separated after the trash block float is broken at the weak joint.
After breaking, utilize the equipment of decontaminating in time to clear up and block the float that dirty float, then float recovering the broken dirty float of blocking, change new weak festival connecting piece axostylus axostyle. The trash-blocking float recovers the appearance before fracture.
To sum up, the utility model discloses a landing stage blocks that dirty floats and only changes traditional landing stage and blocks dirty connection structure who floats one of them festival, increases weak festival connecting piece and cable wire at this festival piece. The breaking position of the trash holding float can be controlled, and the pontoon can not be separated. And the safety of structures such as a water inlet, a trash rack and the like is ensured. Simultaneously, float the operation period at the trash holding, owing to need not to worry that the trash holding floats the fracture back wharf boat and breaks away from, consequently only need prepare a plurality of weak connecting piece spares, need not to prepare a large amount of wharf boat spares, practiced thrift investment cost.
The above description of the embodiments is to be understood as being given by way of illustration and not as a limitation on the scope of the invention, and all modifications in the art which are equivalent to the present invention are intended to fall within the scope of the invention as defined in the appended claims.
Claims (5)
1. A pontoon trash holding float with weak joints is characterized by comprising a pontoon floating box (1), an end pontoon floating box (2), a common connecting piece (3), a weak joint connecting piece (4) and a flexible steel cable (5); be in and articulate through weak festival connecting piece (4) between two sections wharfboat flotation pontoon (1) at middle part to, still connect between these two sections flexible steel cable (5), the pulling force that flexible steel cable (5) can bear is greater than weak festival connecting piece, and the intensity of ordinary connecting piece (3) is greater than weak festival connecting piece (4).
2. The pontoon trash buoy with weak sections as claimed in claim 1, wherein the pontoon (1) is hinged to the pontoon (2) at the end, and the adjacent sections of the pontoon (1) are hinged to each other by the common connecting member (3) except for the weak section connecting member (4).
3. The pontoon with weak joint as claimed in claim 1, wherein the pontoon (1) is hinged by a weak joint connecting piece (4) at the middle of the pontoon.
4. A pontoon as defined in claim 1, wherein the length of the flexible cable (5) is substantially greater than the distance between two pontoon pontoons (1) joined by the weakened section (4).
5. The pontoon trash buoy with weak section as claimed in claim 1, wherein the two pontoon pontoons (1) in the middle are hinged and connected with the flexible steel cable (5) through the weak section connecting piece (4), and the other pontoon pontoons (1) are hinged through the common connecting piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488409.3U CN211948274U (en) | 2019-12-30 | 2019-12-30 | Pontoon trash holding float with weak section structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488409.3U CN211948274U (en) | 2019-12-30 | 2019-12-30 | Pontoon trash holding float with weak section structure |
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| CN211948274U true CN211948274U (en) | 2020-11-17 |
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| CN201922488409.3U Active CN211948274U (en) | 2019-12-30 | 2019-12-30 | Pontoon trash holding float with weak section structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042079A (en) * | 2019-12-30 | 2020-04-21 | 中国电建集团华东勘测设计研究院有限公司 | Pontoon trash holding float with weak section structure |
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2019
- 2019-12-30 CN CN201922488409.3U patent/CN211948274U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042079A (en) * | 2019-12-30 | 2020-04-21 | 中国电建集团华东勘测设计研究院有限公司 | Pontoon trash holding float with weak section structure |
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