Anti-cracking layered vibrating device for prestressed concrete pouring

Abstract

The invention relates to the technical field of prestressed concrete pouring, in particular to an anti-cracking prestressed concrete pouring layered vibrating device which comprises a vibrating pipe, and the top of the vibrating pipe is fixedly connected with a connecting hose; the vibrating assembly is arranged at the bottom of the vibrating pipe and comprises a hinged disc rotationally connected to the bottom of the inner wall of the vibrating pipe, a plurality of annularly-arranged vibrating blocks are hinged to the bottom of the hinged disc, a hinged arm is hinged to one end of each vibrating block, and a hinged ring is hinged to the top of each hinged arm. A piston rod is driven to move downwards, so that the piston rod drives a first driving shaft to move downwards through a second driving shaft, the first driving shaft drives a hinge arm to be hinged to a vibrating block through a hinge ring, the vibrating block is hinged to a hinge disc, and then the inclination angle of the vibrating block is changed; therefore, the purpose of dynamic adjustment adapting to the change of the slump of the concrete is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of prestressed concrete pouring, in particular to a crack-proof prestressed concrete pouring layered vibration device. Background Art

[0002] With the development of society, people's environmental awareness has gradually increased. In the field of construction, people have also begun to pursue green buildings. Among them, prefabricated buildings are particularly in line with the requirements of green buildings. Prefabricated buildings produce and cast building accessories in factories, and then transport them to the site for assembly after maintenance. This can greatly reduce the environmental pollution caused by the production process to the construction site.

[0003] Prestressed concrete structures are structures in which pressure is artificially applied to structural components before they are subjected to external loads. The resulting prestressed state is used to reduce or offset the tensile stress caused by the external loads. This means that the concrete's higher compressive strength compensates for its insufficient tensile strength, delaying cracking in the tensile zone. Structures made of prestressed concrete are also called prestressed reinforced concrete structures because they achieve precompressive stress by tensioning steel bars.

[0004] For example, the announcement number CN119036621B provides a pouring device and pouring method for green building construction, which includes a pouring tank for holding concrete aggregates and a discharge assembly arranged inside the pouring tank for squeezing concrete. The pouring tank is composed of a tank body, an upper tube, a corrugated pipe, and a lower tube connected to each other. The auger is arranged in the upper tube and the two are of compatible sizes. The lower tube is provided with a vibrating assembly for reducing the gaps in the poured concrete. The vibrating assembly includes a fixed cylinder, a shield structure, and a vibrating structure. The vibrating structure includes a conduction cylinder, a vibrating plate, and a transmission rod. By providing the vibrating assembly, the device can vibrate the poured concrete while pouring the concrete, so as to reduce the gaps between the poured concrete and improve the pouring quality. At the same time, by providing the shield structure, the concrete pouring speed can be reduced as the pouring height increases, so as to avoid excessive concrete pouring overflowing the mold when approaching the mold opening, causing waste.

[0005] Publication number CN115503072A provides a concrete wall panel casting device and casting method for civil engineering projects, which belong to the field of concrete production and include a base, a concrete mixing unit fixedly connected to one side of the upper surface of the base; a casting template is provided in the middle position of the upper surface of the base; an automatic vibrating mechanism for vibrating the concrete in the casting template is provided on the other side of the upper surface of the base; the present invention solves the problem in the prior art that the vibrator is not inserted vertically and easily leaves gaps in the concrete by setting an automatic vibrating mechanism; at the same time, the automatic vibrating mechanism of the present invention realizes layer-by-layer vibration of the concrete inside the casting template, thereby improving the concrete vibration and compacting effect; finally, the automatic vibrating mechanism of the present invention is provided with multiple groups of vibrating units, which can realize vibration at multiple positions at the same time, thereby improving the vibration efficiency and shortening the production cycle of concrete wall panels.

[0006] However, in actual use, the above technology has a fixed diameter and cannot dynamically adjust to the changes in concrete slump. For example, when the concrete slump is low during layered pouring, the fixed diameter vibrating head cannot fully break up the aggregate adhesion, which can easily lead to problems such as loose vibration and honeycombed surface. When the slump increases, excessive vibration may cause the aggregate to sink and the mortar to float, resulting in segregation. Summary of the Invention

[0007] The purpose of the present invention is to provide a crack-proof prestressed concrete pouring layered vibration device to solve the problem that a fixed diameter cannot adapt to the dynamic adjustment of the change of concrete slump.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a crack-proof prestressed concrete pouring layered vibration device, comprising:

[0009] A vibrating pipe, the top of which is fixedly connected to a connecting hose;

[0010] A vibrating assembly is provided at the bottom of the vibrating tube, the vibrating assembly comprising a hinged plate rotatably connected to the bottom of the inner wall of the vibrating tube, a plurality of ring-shaped vibrating blocks being hingedly connected to the bottom of the hinged plate, one end of each vibrating block being hingedly connected to an articulated arm, the top of each articulated arm being articulated to an articulated ring, and the inner wall of the articulated ring being rotatably connected to a first drive shaft via a bearing, so that when the first drive shaft moves downward, it cooperates with the articulated ring and the articulated arm to drive the plurality of vibrating blocks to unfold;

[0011] The drive assembly is arranged in the vibrating tube, and the drive assembly includes a second drive shaft fixedly connected to the top of the first drive shaft, the surface of the second drive shaft is movably sleeved with the first drive sleeve, the surface of the first drive sleeve is rotatably connected to the first support frame through a bearing, and the first support frame is fixedly connected to the inner wall of the vibrating tube, the surface of the first drive sleeve is fixedly connected with an eccentric block, the top of the second drive shaft is fixedly connected to the piston rod, the top of the piston rod is fixedly connected to the third drive shaft, and the surface of the third drive shaft is movably sleeved with the second drive sleeve, the top of the second drive sleeve is fixedly connected to a drive soft shaft, and the drive soft shaft is rotatably connected to the inner wall of the connecting hose, so that the drive soft shaft drives the third drive shaft, the piston rod, the second drive shaft, the first drive sleeve and the eccentric block to rotate through the second drive sleeve.

[0012] Preferably, a movable groove is provided at one end of the vibrating block corresponding to the position of the hinged disk, and the hinged arm is hinged to the inner wall of the movable groove, a plurality of partition plates are fixedly connected to the bottom of the hinged disk, the partition plates are located between two adjacent vibrating blocks, and a connecting shaft is fixedly connected to the middle of the plurality of partition plates, a scraper is fixedly connected to one end of the partition plate corresponding to the position of the bottom inner wall of the connecting hose, and the scraper is tightly fitted to the bottom of the inner wall of the connecting hose, and the number of the vibrating blocks is three.

[0013] Preferably, the inner wall of the second drive sleeve, the surface of the third drive shaft, the inner wall of the first drive sleeve and the surface of the second drive shaft are all regular polygonal structures, so that the second drive sleeve drives the third drive shaft, the piston rod, the second drive shaft and the first drive sleeve to maintain transmission while the third drive shaft and the second drive shaft move up and down on the inner walls of the second drive sleeve and the first drive sleeve respectively. The drive flexible shaft is driven by a drive motor, the first drive sleeve is rotatably connected to the middle part of the hinged disk through a bearing, the bottom of the surface of the first drive sleeve is fixedly connected to the drive disk, the drive disk is located at the bottom of the first support frame, the drive disk is eccentrically arranged on the surface of the first drive sleeve, a first drive groove is opened in the middle part of the drive disk, the inner wall of the first drive groove is rotatably connected to the eccentric gear disk, the middle part of the eccentric gear disk is annularly provided with a plurality of second drive grooves, the inner wall of the second drive groove is movably connected to the drive column, and the inner diameter of the second drive groove is larger than the diameter of the drive column.

[0014] Preferably, a driving ring is fixedly connected to the bottom of the driving column, and the driving ring is rotatably connected to the inner wall of the vibrating tube through a bearing, and the driving ring is fixedly connected to the top of the hinged disk, and the surface of the eccentric toothed disk is engaged with a fixed toothed ring, and the eccentric toothed disk and the fixed toothed ring are eccentrically arranged, and the fixed toothed ring is fixedly connected to the inner wall of the vibrating tube.

[0015] Preferably, it also includes an adjustment assembly for driving the third drive shaft, the piston rod and the second drive shaft to move up and down, the adjustment assembly includes a second support frame fixedly connected to the inner wall of the vibrating tube, and the second support frame is rotatably connected to the top of the first drive sleeve surface through a sealed bearing, and the eccentric block is located between the first support frame and the second support frame.

[0016] Preferably, the top of the second support frame is fixedly connected to the piston cylinder, and the piston rod is movably connected to the middle of the piston cylinder through a sealed bearing, the surface of the piston rod corresponding to the position of the piston cylinder is fixedly connected to the piston, and the piston is movably connected to the inner wall of the piston cylinder, and the bottom of the inner wall of the piston cylinder is fixedly connected to a partition frame, and the partition frame is movably connected to the surface of the piston rod through a bearing.

[0017] Preferably, a hydraulic pipe is fixedly embedded in the top of one end of the piston cylinder, and the hydraulic pipe is fixedly passed through and extended to the outside of the vibrating pipe. The top of the hydraulic pipe is fixedly connected to a connecting pipe, and the connecting pipe is fixedly connected to the surface of the connecting hose.

[0018] Preferably, the top of the piston cylinder is fixedly connected to a support tube, and the second drive sleeve is rotatably connected to the inner walls of the support tube and the vibrating tube respectively through bearings.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention drives the piston rod downward, causing the piston rod to drive the first drive shaft downward through the second drive shaft, and the first drive shaft drives the articulated arm to articulate with the vibrating block through the articulated ring, and the vibrating block to articulate with the articulated plate, thereby changing the inclination angle of the vibrating block, that is, realizing the opening and closing of multiple vibrating blocks, thereby achieving the purpose of dynamic adjustment to adapt to changes in concrete slump;

[0021] 2. The present invention also causes the first driving sleeve to drive the driving disc to rotate while the first driving sleeve rotates, and causes the driving disc to cooperate with the first driving groove to drive the eccentric toothed disc to move eccentrically, so that the eccentric toothed disc is eccentrically meshed with the fixed toothed ring, and the second driving groove cooperates with the driving column to drive the driving ring to rotate slowly. When the driving ring rotates, the driving ring drives the hinged disc to rotate, and the hinged disc drives the vibrating block and the partition plate to rotate respectively, so that the vibrating block can rotate slowly in the concrete, and the vibrating block is inserted into the concrete in a closed state to reduce resistance. After reaching the target layer, the vibrating block opens, and the concrete is vibrated synchronously with the vibrating tube driving the vibrating block to vibrate synchronously with the slow rotation of the vibrating block, so that the purpose of uniform vibration can be achieved by the composite action of "expansion vibration + slow rotation". BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the overall structure of the crack-proof prestressed concrete pouring and layered vibration device of the present invention;

[0023] Figure 2 This is an exploded view of the overall structure of the crack-proof prestressed concrete pouring and layered vibration device of the present invention;

[0024] Figure 3 This is a cross-sectional view of the overall structure of the crack-proof prestressed concrete pouring and layered vibration device of the present invention;

[0025] Figure 4 This is a partial cross-sectional view of the overall structure of the crack-proof prestressed concrete pouring layered vibration device of the present invention;

[0026] Figure 5 This is a partial schematic diagram of the structure of the driving assembly of the crack-proof prestressed concrete pouring layered vibration device of the present invention;

[0027] Figure 6 This is a partial exploded view of the driving assembly structure of the crack-proof prestressed concrete pouring layered vibration device of the present invention;

[0028] Figure 7 This is a partial schematic diagram of the structure of the vibration assembly of the crack-proof prestressed concrete pouring layered vibration device of the present invention;

[0029] Figure 8 This is a schematic diagram of the anti-cracking prestressed concrete pouring layered vibration device of the present invention in the open state.

[0030] In the figure: 1. Vibrating pipe; 2. Connecting hose;

[0031] 301, hinged plate; 302, vibrating block; 303, movable groove; 304, hinged arm; 305, hinged ring; 306, first drive shaft; 307, partition plate; 308, connecting shaft; 309, scraper;

[0032] 401, second drive shaft; 402, first drive sleeve; 403, piston rod; 404, third drive shaft; 405, second drive sleeve; 406, flexible drive shaft; 407, drive disc; 408, first drive slot; 409, eccentric toothed disc; 410, second drive slot; 411, drive column; 412, drive ring; 413, fixed toothed ring; 414, eccentric block; 415, first support frame;

[0033] 501, second support frame; 502, piston cylinder; 503, piston; 504, partition frame; 505, hydraulic pipe; 506, connecting pipe; 507, support pipe. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figure 1-8 The present invention provides a technical solution: a crack-proof prestressed concrete pouring layered vibration device, comprising:

[0036] A vibrating pipe 1, a connecting hose 2 is fixedly installed on the top of the vibrating pipe 1;

[0037] The vibrating assembly is arranged at the bottom of the vibrating tube 1, and the vibrating assembly includes a hinged plate 301 rotatably connected to the bottom of the inner wall of the vibrating tube 1. The bottom of the hinged plate 301 is hinged with a plurality of ring-shaped vibrating blocks 302. One end of the vibrating block 302 is hinged with a hinged arm 304. The top of the hinged arm 304 is hinged with a hinged ring 305. The inner wall of the hinged ring 305 is rotatably connected to the first driving shaft 306 through a bearing. When the first driving shaft 306 moves downward, it cooperates with the hinged ring 305 and the hinged arm 304 to drive the plurality of vibrating blocks 302 to expand, and the vibrating blocks 30 A movable groove 303 is formed at one end corresponding to the position of the hinged disc 301, and a hinged arm 304 is hingedly connected to the inner wall of the movable groove 303. A plurality of partition plates 307 are fixedly installed at the bottom of the hinged disc 301. The partition plates 307 are located between two adjacent vibrating blocks 302, and a connecting shaft 308 is fixedly installed in the middle of the plurality of partition plates 307. A scraper 309 is fixedly installed at one end of the partition plates 307 corresponding to the inner wall of the bottom of the connecting hose 2. The scraper 309 is tightly attached to the bottom of the inner wall of the connecting hose 2. There are three vibrating blocks 302.

[0038] When the above structure is in use, the first drive shaft 306 moves downward, so that the first drive shaft 306 drives the articulated arm 304 to be hinged with the vibrating block 302 through the articulated ring 305, and the vibrating block 302 is articulated with the articulated disk 301, thereby changing the inclination angle of the vibrating block 302, that is, realizing the opening and closing changes of multiple vibrating blocks 302.

[0039] The driving assembly is arranged in the vibrating tube 1, and the driving assembly includes a second driving shaft 401 fixedly mounted on the top of the first driving shaft 306, the surface of the second driving shaft 401 is movably connected with the first driving sleeve 402, the surface of the first driving sleeve 402 is rotatably connected with the first support frame 415 through a bearing, and the first support frame 415 is fixedly mounted on the inner wall of the vibrating tube 1, the surface of the first driving sleeve 402 is fixedly mounted with an eccentric block 414, the top of the second driving shaft 401 is fixedly mounted with a piston rod 403, the top of the piston rod 403 is fixedly mounted with a third driving shaft 404, and the surface of the third driving shaft 404 is movably connected with the second driving sleeve 405, the top of the second driving sleeve 405 is fixedly mounted with a driving soft shaft 406, and the driving The movable flexible shaft 406 is rotatably connected to the inner wall of the connecting hose 2, so that the driving flexible shaft 406 drives the third driving shaft 404, the piston rod 403, the second driving shaft 401, the first driving sleeve 402 and the eccentric block 414 to rotate through the second driving sleeve 405. The inner wall of the second driving sleeve 405, the surface of the third driving shaft 404, the inner wall of the first driving sleeve 402 and the surface of the second driving shaft 401 are all regular polygonal structures, so that the second driving sleeve 405 drives the third driving shaft 404, the piston rod 403, the second driving shaft 401 and the first driving sleeve 402 to maintain transmission while the third driving shaft 404 and the second driving shaft 401 move up and down on the inner walls of the second driving sleeve 405 and the first driving sleeve 402 respectively;

[0040] When the above structure is in use, the driving flexible shaft 406 is driven by the driving motor and rotates on the inner wall of the connecting hose 2, wherein the inner wall of the second driving sleeve 405, the surface of the third driving shaft 404, the inner wall of the first driving sleeve 402 and the surface of the second driving shaft 401 are all regular polygonal structures, which makes the second driving sleeve 405 can transmit torque to the third driving shaft 404, and at the same time the second driving shaft 401 can transmit torque to the first driving sleeve 402, that is, while maintaining the state of transmitting torque, the third driving shaft 404 and the second driving shaft 401 can also respectively The inner wall of the tube 405 and the first drive sleeve 402 moves up and down, so that the drive soft shaft 406 drives the eccentric block 414 to rotate through the second drive sleeve 405 in cooperation with the third drive shaft 404, the piston rod 403, the second drive shaft 401 and the first drive sleeve 402. Since the eccentric block 414 is eccentrically set, the first drive sleeve 402 drives the eccentric block 414 to vibrate when it rotates, and the eccentric block 414 transmits the vibration to the vibrating pipe 1 through the first support frame 415, and the eccentric block 414 drives the vibrating pipe 1 to vibrate, thereby realizing the effect of the vibrating pipe 1 on vibrating the concrete.

[0041] The driving shaft 406 is driven by a driving motor. The first driving sleeve 402 is rotatably connected to the middle of the hinged disc 301 through a bearing. A driving disc 407 is fixedly installed on the bottom of the surface of the first driving sleeve 402. The driving disc 407 is located at the bottom of the first support frame 415. The driving disc 407 is eccentrically arranged on the surface of the first driving sleeve 402. A first driving groove 408 is opened in the middle of the driving disc 407. The inner wall of the first driving groove 408 is rotatably connected to an eccentric toothed disc 409. The middle part of the eccentric toothed disc 409 is annularly provided with a plurality of second driving teeth. The inner wall of the movable groove 410 and the second drive groove 410 is movably connected with a drive column 411. The inner diameter of the second drive groove 410 is larger than the diameter of the drive column 411. A drive ring 412 is fixedly installed at the bottom of the drive column 411. The drive ring 412 is rotatably connected to the inner wall of the vibrating tube 1 through a bearing, and the drive ring 412 is fixedly installed on the top of the hinged disk 301. The surface of the eccentric toothed disk 409 is meshed with a fixed toothed ring 413, and the eccentric toothed disk 409 and the fixed toothed ring 413 are eccentrically arranged. The fixed toothed ring 413 is fixedly installed on the inner wall of the vibrating tube 1;

[0042] When the above structure is in use, the first drive sleeve 402 rotates, which causes the first drive sleeve 402 to drive the drive disc 407 to rotate, and the drive disc 407 cooperates with the first drive groove 408 to drive the eccentric toothed disc 409 to move eccentrically, so that the eccentric toothed disc 409 is eccentrically engaged with the fixed toothed ring 413, and the second drive groove 410 cooperates with the drive column 411 to drive the drive ring 412 to rotate slowly, and when the drive ring 412 rotates, the drive ring 412 drives the hinged disc 301 to rotate, and the hinged disc 301 drives the vibrating block 302 and the partition plate 303 respectively. 07 rotation, so that the vibrating block 302 can rotate slowly in the concrete, so that the vibrating block 302 is inserted into the concrete in a closed state to reduce resistance. After reaching the target layer, the vibrating block 302 opens, and the vibrating tube 1 drives the vibrating block 302 to vibrate synchronously to vibrate the concrete. In conjunction with the slow rotation of the vibrating block 302, the purpose of uniform vibration can be achieved by the composite action of "expansion vibration + slow rotation". Through the opening and closing changes of multiple vibrating blocks 302 and the rotation of multiple vibrating blocks 302, the purpose of dynamic adjustment and uniform vibration that can adapt to changes in the slump of concrete is achieved.

[0043] The eccentric block 414 is located between the first support frame 415 and the second support frame 501, and the piston cylinder 502 is fixedly installed on the top of the second support frame 501, and the piston rod 403 is movably connected to the middle part of the piston cylinder 502 through a sealed bearing. The piston cylinder 502 is fixedly installed on the top of the second support frame 501, and the piston rod 403 is movably connected to the middle part of the piston cylinder 502 through a sealed bearing. The piston cylinder 502 is fixedly installed on the surface of the piston rod 403 corresponding to the position of the piston cylinder 502. , and the piston 503 is movably connected to the inner wall of the piston cylinder 502, and a partition frame 504 is fixedly installed at the bottom of the inner wall of the piston cylinder 502. The partition frame 504 is movably connected to the surface of the piston rod 403 through a bearing. A hydraulic pipe 505 is fixedly embedded in the top of one end of the piston cylinder 502, and the hydraulic pipe 505 is fixedly passed through and extended to the outside of the vibrating pipe 1. A connecting pipe 506 is fixedly installed on the top of the hydraulic pipe 505, and the connecting pipe 506 is fixedly installed on the surface of the connecting hose 2. A support pipe 507 is fixedly installed on the top of the piston cylinder 502, and the second drive sleeve 405 is rotatably connected to the support pipe 507 and the inner wall of the vibrating pipe 1 through bearings respectively;

[0044] When the above structure is in use, when it is necessary to adjust the opening and closing degree of the vibrating block 302, hydraulic oil is injected into the interior of the connecting tube 506 by manual injection or electric control, so that the hydraulic oil inside the connecting tube 506 enters the internal top position of the piston cylinder 502 through the hydraulic pipe 505, and drives the piston 503 to move downward on the inner wall of the piston cylinder 502, and then the piston 503 drives the piston rod 403 to move downward. Conversely, when the hydraulic oil at the internal top position of the piston cylinder 502 is extracted, the piston 503 drives the piston rod 403 to move upward.

[0045] The specific working principle of the device of the present invention is as follows:

[0046] The driving shaft 406 is driven by a driving motor and rotates on the inner wall of the connecting hose 2, wherein the inner wall of the second driving sleeve 405, the surface of the third driving shaft 404, the inner wall of the first driving sleeve 402 and the surface of the second driving shaft 401 are all regular polygonal structures, which enables the second driving sleeve 405 to transmit torque to the third driving shaft 404, and at the same time the second driving shaft 401 can transmit torque to the first driving sleeve 402, that is, while maintaining the state of transmitting torque, the third driving shaft 404 and the second driving shaft 401 can also be respectively in the second driving sleeve 405 The inner wall of the first driving sleeve 402 moves up and down, so that the driving flexible shaft 406 cooperates with the third driving shaft 404, the piston rod 403, the second driving shaft 401 and the first driving sleeve 402 through the second driving sleeve 405 to drive the eccentric block 414 to rotate. Since the eccentric block 414 is eccentrically arranged, the first driving sleeve 402 drives the eccentric block 414 to vibrate when it rotates, and the eccentric block 414 transmits the vibration to the vibrating pipe 1 through the first supporting frame 415, and the eccentric block 414 drives the vibrating pipe 1 to vibrate, thereby realizing the vibrating pipe 1 vibrating the concrete.

[0047] At the same time, when the vibrating pipe 1 vibrates, the vibrating pipe 1 will drive the vibrating block 302 to vibrate through the driving ring 412 and the hinge plate 301, and the vibrating block 302 will vibrate the concrete synchronously with the vibrating pipe 1. When it is necessary to adjust the opening and closing degree of the vibrating block 302, that is, to adjust the vibrating diameter of the vibrating device, hydraulic oil is injected into the interior of the connecting pipe 506 by manual injection or electric control, so that the hydraulic oil inside the connecting pipe 506 enters the internal top position of the piston cylinder 502 through the hydraulic pipe 505 and is discharged from the piston cylinder 502. The inner wall of the piston 503 drives the piston 503 to move downward, and then the piston 503 drives the piston rod 403 to move downward. When the piston rod 403 moves downward, the piston rod 403 drives the first drive shaft 306 to move downward through the second drive shaft 401, and the first drive shaft 306 drives the articulated arm 304 to be hinged to the vibrating block 302 through the articulated ring 305, and the vibrating block 302 is articulated to the articulated disk 301, thereby changing the inclination angle of the vibrating block 302, that is, realizing the opening and closing changes of multiple vibrating blocks 302;

[0048] When the first drive sleeve 402 rotates, the first drive sleeve 402 drives the drive disc 407 to rotate, and the drive disc 407 cooperates with the first drive groove 408 to drive the eccentric toothed disc 409 to move eccentrically, so that the eccentric toothed disc 409 is eccentrically engaged with the fixed toothed ring 413, and the second drive groove 410 cooperates with the drive column 411 to drive the drive ring 412 to rotate slowly. When the drive ring 412 rotates, the drive ring 412 drives the hinged disc 301 to rotate, and the hinged disc 301 drives the vibrating block 302 and the partition plate 307 to rotate respectively. , so that the vibrating block 302 can rotate slowly in the concrete, so that the vibrating block 302 is inserted into the concrete in a closed state to reduce resistance. After reaching the target layer, the vibrating block 302 opens, and as the vibrating tube 1 drives the vibrating block 302 to vibrate synchronously with the concrete, the vibrating block 302 rotates slowly, so that the purpose of uniform vibration can be achieved by vibrating with a composite action of "expansion vibration + slow rotation". Through the opening and closing changes of multiple vibrating blocks 302 and the rotation of multiple vibrating blocks 302, the purpose of dynamic adjustment and uniform vibration that can adapt to changes in concrete slump can be achieved;

[0049] By providing the movable groove 303 and the partition plate 307, wherein the partition plate 307 also vibrates along with the vibration of the vibrating tube 1 through the hinge plate 301 and the drive ring 412, the partition plate 307 can also achieve the vibration of the concrete. Even when the vibrating block 302 is in the open state, the vibration intensity in the depth direction is not affected. At the same time, the partition plate 307 can also rub against the end surface of the vibrating block 302 when the vibrating block 302 is closed, thereby preventing the end surface of the vibrating block 302 from being contaminated with a large amount of concrete residue. By providing the movable groove 303, the concrete residue contaminated therein can be dripped through the movable groove 303 along with the vibration of the vibrating block 302 when it is removed from the concrete.

[0050] By providing the scraper 309 , when the hinged disc 301 rotates slowly, the hinged disc 301 drives the scraper 309 to rotate on the inner wall of the vibrating pipe 1 through the partition plate 307 , thereby preventing concrete from solidifying on the inner wall of the connecting hose 2 .

[0051] The present invention also provides a specific embodiment:

[0052] In the layered pouring of prestressed concrete, in one embodiment, the slump loss law during the pouring process is as follows:

[0053] Bottom concrete (0-20cm):

[0054] Because the bottom concrete directly contacts the bottom of the formwork, the steel density in the steel protection layer area is high, and the aggregate is easily intercepted by the steel mesh when the concrete is poured. The loss of mortar causes the local slump to decrease, the cement hydration to slow down, and the slurry viscosity to increase.

[0055] Middle layer concrete (20-40cm):

[0056] During pouring, it is located in the middle transition zone and is supported by the vibrated concrete of the bottom layer. The impact force of material discharge is partially absorbed, and the slump loss is smaller than that of the bottom layer. However, there is a phenomenon of mortar enrichment at the stratification interface.

[0057] Top concrete (40-60cm):

[0058] When exposed to air, the surface water evaporation rate is about 0.5kg / (m 2 h), and there is no upper concrete pressure, the slump remains relatively stable, but there is a phenomenon of bubble accumulation on the surface.

[0059] From the above, it can be seen that there are different degrees of concrete collapse during layered pouring. The fixed diameter vibrating device in the existing technology is difficult to fully break up the adhesion of aggregates during pouring, and problems such as loose vibration and honeycombed surface are prone to occur.

[0060] The core process used in the present invention is:

[0061] The concrete placing machine pours the bottom 20cm → the vibrating block 302 is positioned to the bottom layer → the vibrating block 302 is opened 40° for vibrating → closed and exited → the middle layer 20cm is poured → the vibrating head is lifted to the middle layer → the vibrating block 302 is opened 15° for vibrating → repeated to the top layer. When vibrating the middle layer, the vibrating block 302 is inserted 5cm into the bottom layer for vibrating, thereby destroying the weak strength film on the surface of the bottom layer and pressing the middle layer mortar into the gaps between the bottom aggregates.

[0062] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Anti-cracking prestressed concrete pouring layered vibration device, characterized by: include: A vibrating pipe (1), the top of which is fixedly connected to a connecting hose (2); A vibrating assembly is arranged at the bottom of a vibrating tube (1), the vibrating assembly comprising a hinged plate (301) rotatably connected to the bottom of the inner wall of the vibrating tube (1), a plurality of vibrating blocks (302) arranged in an annular shape are hingedly connected to the bottom of the hinged plate (301), one end of the vibrating block (302) is hingedly connected to a hinged arm (304), the top of the hinged arm (304) is hingedly connected to a hinged ring (305), and the inner wall of the hinged ring (305) is rotatably connected to a first drive shaft (306) via a bearing, so that when the first drive shaft (306) moves downward, it cooperates with the hinged ring (305) and the hinged arm (304) to drive the plurality of vibrating blocks (302) to unfold; A drive assembly is provided in a vibrating tube (1), the drive assembly comprising a second drive shaft (401) fixedly connected to the top of a first drive shaft (306), a first drive sleeve (402) being movably sleeved on the surface of the second drive shaft (401), a first support frame (415) being rotatably connected to the surface of the first drive sleeve (402) via a bearing, and the first support frame (415) being fixedly connected to the inner wall of the vibrating tube (1), an eccentric block (414) being fixedly connected to the surface of the first drive sleeve (402), and a piston rod ( 403), the top of the piston rod (403) is fixedly connected to a third drive shaft (404), and the surface of the third drive shaft (404) is movably sleeved with a second drive sleeve (405), the top of the second drive sleeve (405) is fixedly connected to a drive soft shaft (406), and the drive soft shaft (406) is rotatably connected to the inner wall of the connecting hose (2), so that the drive soft shaft (406) drives the third drive shaft (404), the piston rod (403), the second drive shaft (401), the first drive sleeve (402) and the eccentric block (414) to rotate through the second drive sleeve (405).

2. The crack-proof prestressed concrete pouring layered vibration device according to claim 1, characterized in that: A movable groove (303) is provided at one end of the vibrating block (302) corresponding to the position of the hinged disk (301), and the hinged arm (304) is hinged to the inner wall of the movable groove (303). A plurality of partition plates (307) are fixedly connected to the bottom of the hinged disk (301). The partition plates (307) are located between two adjacent vibrating blocks (302), and a connecting shaft (308) is fixedly connected to the middle of the plurality of partition plates (307). A scraper (309) is fixedly connected to one end of the partition plate (307) corresponding to the position of the bottom inner wall of the connecting hose (2), and the scraper (309) is tightly fitted to the bottom of the inner wall of the connecting hose (2). The number of the vibrating blocks (302) is three.

3. The crack-proof prestressed concrete pouring layered vibration device according to claim 2, characterized in that: The inner wall of the second drive sleeve (405), the surface of the third drive shaft (404), the inner wall of the first drive sleeve (402) and the surface of the second drive shaft (401) are all regular polygonal structures, so that the second drive sleeve (405) drives the third drive shaft (404), the piston rod (403), the second drive shaft (401) and the first drive sleeve (402) to maintain transmission while the third drive shaft (404) and the second drive shaft (401) move up and down on the inner walls of the second drive sleeve (405) and the first drive sleeve (402) respectively. The drive flexible shaft (406) is driven by a drive motor. The first drive sleeve (402) is rotatably connected to the hinge plate (301) through a bearing. In the middle, a driving disc (407) is fixedly connected to the bottom of the surface of the first driving sleeve (402), and the driving disc (407) is located at the bottom of the first support frame (415). The driving disc (407) is eccentrically arranged on the surface of the first driving sleeve (402). A first driving groove (408) is opened in the middle of the driving disc (407), and an eccentric toothed disc (409) is rotatably connected to the inner wall of the first driving groove (408). A plurality of second driving grooves (410) are opened in the middle of the eccentric toothed disc (409) in an annular shape, and a driving column (411) is movably connected to the inner wall of the second driving groove (410). The inner diameter of the second driving groove (410) is larger than the diameter of the driving column (411).

4. The crack-proof prestressed concrete pouring layered vibration device according to claim 3, characterized in that: The bottom of the driving column (411) is fixedly connected to a driving ring (412), the driving ring (412) is rotatably connected to the inner wall of the vibrating tube (1) through a bearing, and the driving ring (412) is fixedly connected to the top of the hinged disk (301), the surface of the eccentric toothed disk (409) is meshed with a fixed toothed ring (413), and the eccentric toothed disk (409) and the fixed toothed ring (413) are eccentrically arranged, and the fixed toothed ring (413) is fixedly connected to the inner wall of the vibrating tube (1).

5. The crack-proof prestressed concrete pouring layered vibration device according to claim 4, characterized in that: The invention also includes an adjustment component for driving the third drive shaft (404), the piston rod (403) and the second drive shaft (401) to move up and down, wherein the adjustment component includes a second support frame (501) fixedly connected to the inner wall of the vibrating tube (1), and the second support frame (501) is rotatably connected to the top of the surface of the first drive sleeve (402) through a sealed bearing, and the eccentric block (414) is located between the first support frame (415) and the second support frame (501).

6. The crack-proof prestressed concrete pouring layered vibration device according to claim 5, characterized in that: The top of the second support frame (501) is fixedly connected to the piston cylinder (502), and the piston rod (403) is movably connected to the middle part of the piston cylinder (502) through a sealed bearing. The surface of the piston rod (403) corresponding to the position of the piston cylinder (502) is fixedly connected to the piston (503), and the piston (503) is movably connected to the inner wall of the piston cylinder (502). The bottom of the inner wall of the piston cylinder (502) is fixedly connected to a partition frame (504), and the partition frame (504) is movably connected to the surface of the piston rod (403) through a bearing.

7. The crack-proof prestressed concrete pouring layered vibration device according to claim 6, characterized in that: A hydraulic pipe (505) is fixedly embedded in the top of one end of the piston cylinder (502), and the hydraulic pipe (505) is fixedly passed through and extended to the outside of the vibrating pipe (1). The top of the hydraulic pipe (505) is fixedly connected to a connecting pipe (506), and the connecting pipe (506) is fixedly connected to the surface of the connecting hose (2).

8. The crack-proof prestressed concrete pouring layered vibration device according to claim 7, characterized in that: The top of the piston cylinder (502) is fixedly connected to a support tube (507), and the second drive sleeve (405) is rotatably connected to the inner wall of the support tube (507) and the vibrating tube (1) through bearings.

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