CN210401166U

CN210401166U - Erosion device for simulating concrete in flowing water state

Info

Publication number: CN210401166U
Application number: CN201921112567.2U
Authority: CN
Inventors: 蔡杰龙; 张君禄; 廖文来; 王梓鑫; 蔡灿旭
Original assignee: Guangdong Research Institute of Water Resources and Hydropower
Current assignee: Guangdong Research Institute of Water Resources and Hydropower
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-24
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a simulation moves erosion device of concrete under water condition, including the reaction box, reaction box inner wall joint rack, a plurality of joint pieces of shelf location, the joint apron is rotated to the opening both sides of reaction box, cup joints the pivot on the apron, and the both ends curb plate of reaction box is cup jointed at the both ends of pivot, and it has the mounting groove to open in the both ends curb plate of reaction box, installs elevating system between pivot and mounting groove, and the filling has organic acid to corrode solution in the reaction box, and circulating device is installed to reaction box both ends outer wall department. Concrete test piece passes through the joint piece joint on the rack, and the test piece submergence drives organic acid erosion solution circulation flow and control velocity of flow through circulating device in organic acid erosion solution, thereby water delivery building structure concrete receives the state of erosion in the real simulation actual engineering, after the experiment, opens the apron, and the elevating system linkage rises the rack, makes concrete test piece lifted out organic acid erosion solution, is convenient for take out or change the test piece.

Description

Erosion device for simulating concrete in flowing water state

Technical Field

The utility model relates to an engineering testing and research technical field specifically are an erosion device of concrete under simulation flowing water state.

Background

The structure types of the water delivery building comprise aqueducts, open channels, culverts, inverted siphons and the like, and the water delivery building mainly comprises reinforced concrete structures, the section types of different structures are different, and the environments of concrete are also different. The quality and safe and effective operation of the water delivery building are important infrastructure facilities for the safety construction of the national treasury and national defense of the customs.

In the process of water delivery of a water delivery building, erosion of concrete comprises scouring abrasion and biological erosion, wherein the biological erosion mainly comprises the steps that microorganisms, limnoperna lacustris and other organisms in a water body are attached to the surface of a concrete structure, and the concrete is eroded by secreting organic acid and carrying out chemical reaction with the concrete.

At present, the evaluation method of concrete bioerosion of a water delivery structure is to perform a simulation test by statically soaking a concrete test piece in an aquatic organism environment for artificial cultivation for a period of time or directly take a field water body for a test, wherein the survival rate of artificially cultivated aquatic organisms is difficult to guarantee, the concentration of organic acid in the field water body is low, the test period is long, the simulated bioerosion effect is not obvious, the shape of an experimental box is single, and the result is not comprehensive.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a concrete's erosion device under simulation flowing water state to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an erosion device of concrete under simulation flowing water state, includes the reaction box, reaction box inner wall slip joint rack, the both ends inner wall of reaction box is opened there is the guide way, the both ends outer wall fixed mounting guide block of rack, the guide block slip joint is in the guide way, a plurality of joint pieces of shelf location, the joint apron is rotated to the opening both sides of reaction box, the fixed pivot that cup joints on the apron, the both ends curb plate of cup jointing the reaction box is rotated at the both ends of pivot, seted up the mounting groove in the both ends curb plate of reaction box, installation elevating system between pivot and mounting groove, and elevating system connect the guide block, the filling has organic acid to corrode solution in the reaction box, reaction box both ends outer wall department installs circulating device.

Preferably, the cross section of the reaction box is provided with four types of U-shaped, rectangular, trapezoidal and circular, and independent experiments are respectively carried out, so that the corrosion condition of concrete under different cross section types is simulated, the widths of the bottoms of the inner cavities of the reaction box with the four cross section types are smaller than or equal to the width of the tops of the inner cavities of the reaction box, and the width of the placing frame is equal to the width of the bottom of the inner cavity of the reaction box, so that the placing frame can be conveniently lifted to place or take out a concrete test piece.

Preferably, the joint piece includes the fixed plate, it has a plurality of mounting holes to open on the horizontal pole on the rack, the horizontal pole both ends on the rack are all through bolt installation fixed plate, the one side outer wall that the fixed plate is close to mutually is opened there is the spread groove, the one end of slip joint ejector pin in the spread groove, install the pressure spring between the one end that ejector pin and spread groove were kept away from mutually, the one end fixed connection clamp plate that the ejector pin is close to mutually.

Preferably, the pressure spring is in a compression state all the time, the bottom of the pressing plate is in close contact with the cross rod on the placing frame, the top of the pressing plate is of an inclined structure, and one side, close to the pressing plate, of the pressing plate and the surface of the cross rod of the placing frame are of a net-shaped anti-skidding structure.

Preferably, elevating system includes the rolling wheel, the equal fixed rolling wheel that cup joints in both ends of pivot, the rolling wheel rotates to cup joint in the both sides inboard of reaction box, it has the rolling groove to open on the rolling wheel, and the one end of rolling inslot fixed connection stay cord, sliding joint U type seat in the mounting groove, U type seat opening is downwards, the other end of stay cord stretches into the blind end of mounting groove top and fixed connection U type seat, U type seat inner chamber rotates the connecting gear through the round pin axle, the fixed rack of one side inner wall fixed joint of mounting groove, the opposite side inner wall department of mounting groove opens there is the spout, sliding joint lifting rack in the spout, fixed rack and lifting rack mesh gear's both sides respectively, lifting rack's bottom outer wall fixed connection guide block.

Preferably, the outer walls of the two side plates of the reaction box are provided with spring pins, the winding wheel is provided with pin holes matched with the pins of the spring pins, friction pads are arranged between the two end faces of the winding wheel and the side plates of the reaction box, the outer walls of the two sides of the U-shaped seat are fixedly provided with limit blocks, and the limit blocks are clamped on the inner wall of the mounting groove in a sliding manner.

Preferably, circulating device includes circulating pump and flowmeter, water piping connection leads to between circulating pump and flowmeter, the other end of circulating pump and flowmeter leads to the both ends of water piping connection reaction box respectively, all install the valve on the water pipe between circulating pump and flowmeter and reaction box.

Compared with the prior art, the beneficial effects of the utility model are that: the biological erosion environment of the concrete of the water delivery building with different structures is simulated really by the reaction box bodies with different section types, the circulating water state and the flow speed of the organic acid solution in the reaction box bodies are controlled by the circulating device, the eroded state of the concrete of the water delivery building structure in the actual engineering is simulated really, the deterioration condition that the concrete of the water delivery building with different section types is eroded by biological organic acid secretion in the water-moving state can be considered comprehensively, the problem that the biological organic acid secretion of the concrete of the water delivery structure is difficult to test and evaluate the effect is solved, and a basis is provided for the comprehensive evaluation of the concrete deterioration of the water delivery engineering; concrete test pieces with different sizes can be clamped quickly through the clamping blocks, so that the concrete test pieces are placed stably, and the test pieces are prevented from being pushed by flowing organic acid erosion solution; make the rolling wheel linkage rotate when the apron is opened to the pulling stay cord, enlarge the sliding quantity that forms the lifting rack through elevating system with the shrinkage of stay cord, thereby drive the rack through the lifting rack and rise, be convenient for take out and change concrete sample, convenient to use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a left-side sectional structure of the middle lifting mechanism of the present invention;

FIG. 3 is a schematic view of a partial structure of the middle lifting mechanism of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the present invention;

fig. 5 is a schematic view of the left side view cross-section structure of the present invention.

In the figure: the device comprises a reaction box 1, a placing frame 2, a guide groove 3, a guide block 4, a cover plate 5, a lifting mechanism 6, a winding wheel 61, a pull rope 62, a U-shaped seat 63, a gear 64, a fixed gear 65, a lifting gear 66, a sliding groove 67, a clamping block 7, a fixed plate 71, a connecting groove 72, a pressure spring 73, a push rod 74, a pressure plate 75, a circulating device 8, a circulating pump 81, a flow meter 82, a water pipe 83, a valve 84, a spring pin 9, a rotating shaft 10, an installing groove 11, a pin hole 12 and a limiting block 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a simulation moves erosion device of concrete under water condition, including

reaction box

1, 1 inner wall slip joint rack 2 of reaction box, open at the both ends inner wall of reaction box 1 has guide way 3, the both ends outer wall fixed mounting guide block 4 of

rack

2, 4 slip joints of guide block are in guide way 3, install a plurality of joint pieces 7 on the rack 2, joint apron 5 is rotated to reaction box 1's opening both sides, the fixed pivot 10 that cup joints on the apron 5, the both ends curb plate of cup joint reaction box 1 is rotated at the both ends of pivot 10, it has mounting groove 11 to open in reaction box 1's the both ends curb plate, installation elevating system 6 between pivot 10 and mounting groove 11, and elevating system 6 connects guide block 4, the filling has organic acid to corrode solution in

reaction box

1, 1 both ends outer wall department installation circulating device 8 of reaction box. Concrete sample passes through 7 joints of joint piece and fixes on rack 2, upper cover plate 5, elevating system 6 is with rack 2 below, thereby with the test piece submergence in organic acid erosion solution, it flows and controls the velocity of flow to drive organic acid erosion solution circulation through circulating device 8, thereby water delivery building structure concrete receives the state of erosion in the actual engineering of true simulation, after the experiment, open apron 5, elevating system 6 links and raises rack 2, make concrete sample lifted out organic acid erosion solution, be convenient for take out or change the test piece.

Reaction box 1's transversal section has four kinds of types of U type, rectangle, trapezoidal and circular to independently experiment respectively, thereby the concrete of simulation different section types under is corroded the condition, and 1 inner chamber bottom width of reaction box of four kinds of transversal section types all is less than or equal to the top width, and rack 2's width equals 1 inner chamber bottom width of reaction box, thereby rack 2 of being convenient for rises and places or take out the concrete sample.

The clamping block 7 comprises a fixing plate 71, a plurality of mounting holes are formed in a cross rod on the placing frame 2, the fixing plate 71 is mounted at two ends of the cross rod on the placing frame 2 through bolts, a connecting groove 72 is formed in the outer wall of one side, close to the fixing plate 71, of the connecting groove 72, one end of a push rod 74 is clamped in the connecting groove 72 in a sliding mode, a pressure spring 73 is mounted between the ends, far away from the push rod 74 and the connecting groove 72, one end, close to the push rod 74 is fixedly connected with a pressing plate 75, the bottom of the pressing plate 75 is in tight contact with the cross rod on the placing frame 2, the top of the pressing plate 75 is of an inclined structure, the fixing plate 71 is mounted on the cross rod of the placing frame 2 according to the size of a concrete sample, the concrete sample is pressed down along the pressing plate 75, the pressing plate 75 is extruded by the inclined surface to push the push rod 74, the push rod 74 slides into, increase frictional force, the concrete sample of being convenient for is fixed, places organic acid and erodees the mobile in-process of solution and pushes away the concrete sample, when taking out the sample, directly hard extract the sample can.

The lifting mechanism 6 comprises a winding wheel 61, two ends of the rotating shaft 10 are fixedly sleeved with the winding wheel 61, the winding wheel 61 is rotatably sleeved in two side plates of the reaction box 1, a winding groove is formed in the winding wheel 61, one end of a pull rope 62 is fixedly connected in the winding groove, a U-shaped seat 63 is slidably clamped in the installation groove 11, the opening of the U-shaped seat 63 is downward, the other end of the pull rope 62 extends into the top of the installation groove 11 and is fixedly connected with the closed end of the U-shaped seat 63, an inner cavity of the U-shaped seat 63 is rotatably connected with a gear 64 through a pin shaft, a clamping fixed rack 65 is fixedly clamped on the inner wall of one side of the installation groove 11, a sliding groove 67 is formed in the inner wall of the other side of the installation groove 11, a lifting rack 66 is slidably clamped in the sliding groove 67, the fixed rack 65 and the lifting rack 66 are respectively meshed with two sides of the gear 64, the outer wall of the bottom, when the pull rope 62 pulls the U-shaped seat 63 to move upwards, the U-shaped seat 63 drives the gear 64 to move upwards, the gear 64 is meshed with the fixed rack 65, the gear 64 can only rotate and move along the fixed rack 64, when the gear 64 moves, the gear 64 drives the lifting rack 66 to slide along the sliding groove 67, the gear 64 rotates and pushes the lifting rack 66 to slide, the ascending distance of the gear 64 is equal to the length of the winding pull rope 62 wound by the winding wheel 61, the distance of the lifting rack 66 pulled by the bracket of the gear 64 is equal to the length of the winding pull rope 62 wound by the winding wheel 61, meanwhile, the arc length of the gear 64 rolling along the fixed rack 65 is also equal to the length of the winding pull rope 62 wound by the winding wheel 61, the distance of the gear 64 rolling and driving the lifting rack 66 to move is equal to the length of the winding pull rope 62 wound by the winding wheel 61, thereby the winding amount of the pull rope 62 is doubled, the, the lifting rack 66 is pulled down by the weight of the placing rack 2 and the concrete sample, and the pull rope 62 is released by the winding wheel 61, so that the placing rack 2 descends, and the concrete sample is conveniently immersed in the organic acid corrosion solution.

Spring pins 9 are installed on the outer walls of two side plates of a reaction box 1, pin holes 12 matched with pins of the spring pins 9 are formed in a winding wheel 61, the cover plate 5 is clamped into the pin holes 12 after being opened, the winding wheel 61 is locked, the placing frame 2 is kept in a rising state, a concrete sample is convenient to take out or replace, when the spring pins 9 are pulled out, the placing frame 2 automatically descends under the action of gravity, meanwhile, the cover plate 5 is passively closed, friction pads are installed between two end faces of the winding wheel 61 and the side plates of the reaction box 1, the winding wheel 61 slowly rotates when the placing plate 2 descends, the placing frame 2 slowly descends, the cover plate 5 is slowly closed, limiting blocks 13 are fixedly installed on the outer walls of two sides of a U-shaped seat 63, the limiting blocks 13 are slidably clamped on the inner wall of a mounting groove 11, and the U-shaped seat 63.

Circulating device 8 includes circulating pump 81 and flowmeter 82, leads to water pipe 83 between circulating pump 81 and flowmeter 82 and connects, and the other end of circulating pump 81 and flowmeter 82 passes through the both ends of water piping connection reaction box 1 respectively, all installs valve 84 on the water piping between circulating pump 81 and flowmeter 82 and reaction box 1, drives organic acid erosion solution circulation flow through circulating pump 81 to the simulation is moved the water state, and flowmeter 82 observes the velocity of flow and controls the velocity of flow through valve 84.

The working principle is as follows: when the utility model is used, the cover plate 5 is rotated to be opened, the cover plate 5 drives the rotating shaft 10 to rotate, thereby the winding wheel 61 rotates to wind the pulling rope 62, the pulling rope 62 pulls the U-shaped seat 63 to move upwards, then the U-shaped seat 63 drives the gear 64 to move upwards, the gear 64 is meshed with the fixed rack 65, then the gear 64 can only rotate along the fixed rack 64 to move, when the gear 64 moves, the lifting rack 66 is driven to slide along the chute 67, the gear 64 rotates to push the lifting rack 66 to slide, the ascending distance of the gear 64 is equal to the length of the winding rope 62 of the winding wheel 61, the distance of the lifting rack 66 pulled by the bracket of the gear 64 is equal to the length of the winding rope 62 of the winding wheel 61, meanwhile, the arc length of the gear 64 rolling along the fixed rack 65 is also equal to the length of the winding wheel 61 pulling rope 62, the distance of the winding gear 64 driving the lifting rack 66 to, thereby enlarging the rolling amount of the pull rope 62 by two times, facilitating the lifting gear 66 to lift the placing rack 2 through the guide block 4, clamping the spring pin 9 into the pin hole 12 to fix the placing rack 2, pressing the concrete sample down along the pressing plate 75, pushing the pressing plate 75 to push the ejector rod 74 by the inclined surface extrusion, making the ejector rod 74 slide into the connecting groove 72, the pressing plate 75 clamping the concrete sample by the pressure spring 73, and the side of the pressing plate 75 close to the cross bar surface of the placing rack 2 is a net-shaped anti-slip structure, increasing the friction force, facilitating the fixation of the concrete sample, and the mounting space of the fixing plate 71 is adjustable, facilitating the fixation of samples with different sizes, then pulling out the spring pin 9, pulling down the lifting rack 66 by the weight of the placing rack 2 and the concrete sample, and simultaneously releasing the pull rope 62 by the winding wheel 61, facilitating the concrete sample to be immersed in the, the circulating pump 81 drives the organic acid erosion solution to circularly flow, so that the flowing water state is simulated, the flow meter 82 observes the flow velocity and controls the flow velocity through the valve 84, the state that the concrete of the water delivery building structure is eroded in the actual engineering is truly simulated, and the experiment is carried out through the reaction boxes 1 with different section types, so that the experiment structure is more comprehensive and reliable.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a simulation moves erosion device of concrete under water condition, includes reaction box (1), its characterized in that: the inner wall of the reaction box (1) is slidably clamped with the placing frame (2), guide grooves (3) are formed in the inner walls of two ends of the reaction box (1), guide blocks (4) are fixedly installed on the outer walls of two ends of the placing frame (2), the guide blocks (4) are slidably clamped in the guide grooves (3), a plurality of clamping blocks (7) are installed on the placing frame (2), clamping cover plates (5) are rotated on two sides of an opening of the reaction box (1), rotating shafts (10) are fixedly sleeved on the cover plates (5), two end side plates of each rotating shaft (10) are rotatably sleeved on two ends of the reaction box (1), mounting grooves (11) are formed in the end side plates of the reaction box (1), lifting mechanisms (6) are installed between the rotating shafts (10) and the mounting grooves (11), the lifting mechanisms (6) are connected with the guide blocks (4), and organic acid etching solution is filled in the reaction box (1), and circulating devices (8) are arranged on the outer walls of the two ends of the reaction box (1).

2. The device for simulating concrete erosion in a flowing water state of claim 1, wherein: the cross section of the reaction box (1) is provided with four types of U-shaped, rectangular, trapezoidal and circular, and independent experiments are respectively carried out, so that the corrosion condition of concrete under different cross section types is simulated, the widths of the bottoms of the inner cavities of the reaction box (1) of the four cross section types are smaller than or equal to the widths of the tops, the width of the placing frame (2) is equal to the width of the bottom of the inner cavity of the reaction box (1), and the placing frame (2) is convenient to ascend so as to place or take out a concrete test piece.

3. The device for simulating concrete erosion in a flowing water state of claim 1, wherein: joint piece (7) are including fixed plate (71), it has a plurality of mounting holes to open on the horizontal pole on rack (2), horizontal pole both ends on rack (2) are all through bolt installation fixed plate (71), one side outer wall that fixed plate (71) are close to mutually is opened has spread groove (72), slide the one end of joint ejector pin (74) in spread groove (72), install pressure spring (73) between the one end that ejector pin (74) and spread groove (72) kept away from mutually, one end fixed connection clamp plate (75) that ejector pin (74) are close to mutually.

4. A device for simulating concrete erosion in a flowing water state as claimed in claim 3, wherein: the compression spring (73) is always in a compression state, the bottom of the pressing plate (75) is in close contact with a cross rod on the placing frame (2), the top of the pressing plate (75) is of an inclined structure, and the side, close to the pressing plate (75), of the pressing plate and the surface of the cross rod of the placing frame (2) are both of a net-shaped anti-skidding structure.

5. The device for simulating concrete erosion in a flowing water state of claim 1, wherein: elevating system (6) are including rolling wheel (61), rolling wheel (61) is all fixed cup jointing at the both ends of pivot (10), rolling wheel (61) rotate cup joint in the both sides inboard of reaction box (1), it has the coiling groove to open on rolling wheel (61), and the one end of fixed connection stay cord (62) in the coiling groove, sliding joint U type seat (63) in mounting groove (11), U type seat (63) opening is down, the other end of stay cord (62) stretches into the blind end of mounting groove (11) top and fixed connection U type seat (63), U type seat (63) inner chamber rotates through the round pin axle and connects gear (64), fixed joint rack (65) of one side inner wall of mounting groove (11), the opposite side inner wall department of mounting groove (11) opens has spout (67), sliding lifting rack (66) in spout (67) joint, the fixed rack (65) and the lifting rack (66) are respectively meshed with two sides of the gear (64), and the outer wall of the bottom of the lifting rack (66) is fixedly connected with the guide block (4).

6. The device for simulating concrete erosion in a flowing water state according to claim 5, wherein: spring pins (9) are installed on the outer walls of two side plates of the reaction box (1), pin-matched pin holes (12) of the spring pins (9) are formed in the winding wheel (61), friction pads are installed between two end faces of the winding wheel (61) and the side plates of the reaction box (1), limiting blocks (13) are fixedly installed on the outer walls of two sides of the U-shaped seat (63), and the limiting blocks (13) are connected to the inner wall of the installation groove (11) in a sliding mode.

7. The device for simulating concrete erosion in a flowing water state of claim 1, wherein: circulating device (8) are including circulating pump (81) and flowmeter (82), connect through water pipe (83) between circulating pump (81) and flowmeter (82), the other end of circulating pump (81) and flowmeter (82) is respectively through the both ends of water piping connection reaction box (1), all install valve (84) on the water pipe between circulating pump (81) and flowmeter (82) and reaction box (1).