Device for improving the density and vibration quality of large-volume concrete pouring

Abstract

The present invention discloses a device for improving the density and vibration quality of large-volume concrete pouring, which comprises: a vibrating steel mesh, which comprises longitudinal vibrating steel bars and transverse vibrating steel bars, wherein the longitudinal vibrating steel bars are arranged in the gaps between the structural steel bars of the concrete structure, one end of the longitudinal vibrating steel bars is connected to the inner formwork via a fixed sleeve, and the other end is connected to the outer formwork via a fixed sleeve; the transverse vibrating steel bars are arranged in the gaps between the structural steel bars of the concrete structure, and the transverse vibrating steel bars are connected to the longitudinal vibrating steel bars; a vibrating motor, which is connected to the vibrating steel mesh via a vibration transmission member to transmit vibration to the vibrating steel mesh. The present invention achieves vibration of the concrete by laying the vibrating steel mesh in the gaps between the structural steel bars of the concrete structure and using the vibrating motor to drive the vibrating steel mesh to vibrate. Vibrating in the form of a vibrating steel mesh has the advantages of uniform and comprehensive vibration, and effectively avoids the occurrence of vibration leakage, uneven vibration, and the like.

Description

Technical Field

[0001] The present invention belongs to the field of mass concrete pouring, and more particularly relates to a device for improving the density and vibration quality of mass concrete pouring. Background Art

[0002] During the construction of large-volume concrete structures, such as foundation pit sidewalls, bridge piers, and caps, concrete must be vibrated promptly during pouring to remove bubbles from the concrete, making it more compact and increasing its strength. Authorized patent ZL201721831705.3 discloses a vibrating device for the construction of large-volume concrete structures. Prefabricated cement piers with sockets are evenly arranged between the gaps between the structural steel bars of the concrete structure. A carbon steel vibrating bar is inserted into the socket of each cement pier as a vibrating bar. The vibrating bars are connected to each other by connecting bars to achieve a stable state. Each vibrating bar is movably connected to an eccentric block vibrating rod at the top, which is then connected to its own vibrating motor via a flexible shaft. For foundation pit sidewalls and bridge piers that are more than ten meters high, the vibrating bars also need to be more than ten meters long. Since the pouring process is gradually poured from the bottom upwards, this puts the vibrating bars and connecting bars above the concrete in an unused vibrating state. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0004] An object of the present invention is to provide a device for improving the density and vibration quality of large-volume concrete pouring, which can improve the concrete vibration efficiency while saving the energy consumed by the vibration motor.

[0005] In order to achieve these objects and other advantages of the present invention, a device for improving the density and vibration quality of large-volume concrete pouring is provided, comprising:

[0006] A vibrating steel mesh comprising longitudinal vibrating steel bars and transverse vibrating steel bars, wherein the longitudinal vibrating steel bars are arranged between the gaps between the structural steel bars of the concrete structure, one end of the longitudinal vibrating steel bars being connected to the inner formwork via a fixing sleeve, and the other end being connected to the outer formwork via a fixing sleeve; and the transverse vibrating steel bars being arranged between the gaps between the structural steel bars of the concrete structure, and the transverse vibrating steel bars being connected to the longitudinal vibrating steel bars;

[0007] The vibrating motor is connected to the vibrating steel mesh through a vibration transmitting member to transmit vibration to the vibrating steel mesh.

[0008] Preferably, the fixed sleeve includes a fixed plate and a sleeve tube, the fixed plate is fixedly connected to the template, the sleeve tube is vertically fixed on the fixed plate, and the longitudinal vibrating steel bar is fixedly connected to the sleeve tube.

[0009] Preferably, a buffer pad is provided between the fixing plate and the sleeve.

[0010] Preferably, the longitudinal vibrating steel bars and the transverse vibrating steel bars are both provided with vertical extension steel bars and horizontal extension steel bars, the vertical extension steel bars are vertically arranged on the upper surface or lower surface of the longitudinal vibrating steel bars and the transverse vibrating steel bars, and the horizontal extension steel bars are horizontally arranged on both sides of the longitudinal vibrating steel bars and the transverse vibrating steel bars.

[0011] Preferably, the vibration transmission member includes a sleeve steel pipe and an eccentric flexible shaft, the lower end of the sleeve steel pipe is connected to the vertical extension steel bar, the eccentric flexible shaft is sleeved in the sleeve steel pipe, and the eccentric flexible shaft is connected to the vibrating motor.

[0012] Preferably, the sleeved steel pipe is composed of multiple sections of assembled pipes spliced together.

[0013] Preferably, a self-locking device is provided at the bottom of the sleeved steel pipe, and the self-locking device is detachably fixedly connected to the longitudinal vibrating steel bar.

[0014] Preferably, the self-locking device comprises:

[0015] At least two groups of clamping structures, the clamping structures are arranged along the length direction of the sleeved steel pipe, the clamping structures include at least three clamping wheels and a connecting rod, the clamping wheels are annularly arranged inside the sleeved steel pipe to define a clamping space, the upper end of the connecting rod is hinged to the inner wall of the sleeve pipe, the clamping wheels are provided with a hinge hole at an eccentric position above one side of the sleeve pipe wall, and the lower end of the connecting rod is hinged to the clamping wheel through the hinge hole;

[0016] A torsion spring is provided at a hinged position between the connecting rod and the inner wall of the sleeve tube to open the connecting rod relative to the inner wall of the sleeve tube.

[0017] Preferably, the outer circumference of the clamping wheel is provided with anti-slip grooves.

[0018] Preferably, the diameter of the upper clamping wheel is larger than the diameter of the lower clamping wheel.

[0019] The present invention has at least the following beneficial effects:

[0020] First, the present invention achieves concrete vibrating by placing a vibrating steel mesh within the gaps between the structural steel bars of a concrete structure and using a vibrating motor to drive the vibrating steel mesh. Vibrating the concrete using the vibrating steel mesh provides uniform and comprehensive vibration, effectively avoiding missed vibrations and uneven vibration.

[0021] Second, the self-locking device of the present invention can utilize the gravity of the sleeve steel pipe itself to achieve a tight connection between the sleeve steel pipe and the vertical extension steel bar. After the vibration is completed, the sleeve steel pipe is lifted upward to automatically separate the sleeve steel pipe from the vertical extension steel bar.

[0022] Third, the present invention utilizes a wire rope to pull the extrusion cylinder to form an extrusion on the connecting rod, so that the clamping wheel moves toward one side of the sleeved steel pipe wall, and the clamping space is increased, so as to facilitate the vertical extension of the steel bar to be inserted into the clamping space, thereby realizing the remote control of the clamping space enlargement.

[0023] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a side structural schematic diagram of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the vibrating steel mesh of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the self-locking device of the present invention.

[0027] 1. Longitudinal vibrating steel bars; 2. Horizontal vibrating steel bars; 3. Vertical extension steel bars; 4. Horizontal extension steel bars; 5. Socketed steel pipes; 6. Clamping wheels; 7. Connecting rods; 8. Extrusion cylinders. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0029] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0031] like Figure 1 As shown, the present invention provides a device for improving the density and vibration quality of large-volume concrete pouring, which includes:

[0032] The vibrating steel mesh includes longitudinal vibrating steel bars 1 and transverse vibrating steel bars 2. The longitudinal vibrating steel bars 1 are arranged in the gaps between the structural steel bars of the concrete structure, one end of the longitudinal vibrating steel bars 1 is connected to the inner formwork via a fixed sleeve, and the other end is connected to the outer formwork via a fixed sleeve; the transverse vibrating steel bars 2 are arranged in the gaps between the structural steel bars of the concrete structure, and the transverse vibrating steel bars 2 are connected to the longitudinal vibrating steel bars 1;

[0033] The vibrating motor is connected to the vibrating steel mesh through a vibration transmitting member to transmit vibration to the vibrating steel mesh.

[0034] In this technical solution, by installing several layers of vibrating steel mesh along the depth of a foundation pit or bridge pier, etc., pouring concrete in layers, and using a vibrating motor to vibrate the vibrating steel mesh in the layer being poured, uniform vibration of the poured concrete can be achieved. The longitudinal vibrating steel bars 1 can be connected to the transverse vibrating steel bars 2 via connecting bars or welding.

[0035] In another technical solution, the fixing sleeve includes a fixing plate and a sleeve. The fixing plate is fixedly connected to the formwork, and the sleeve is vertically fixed to the fixing plate. The longitudinal vibrating steel bar 1 is fixedly connected to the sleeve. The fixing plate is connected to the inner formwork or the outer formwork to achieve the fixation of each layer of vibrating steel mesh.

[0036] In another technical solution, a buffer pad is provided between the fixing plate and the sleeve to reduce the impact of vibration on the inner or outer template.

[0037] In another technical solution, both the longitudinal vibrating steel bars 1 and the transverse vibrating steel bars 2 are provided with vertical extension steel bars 3 and horizontal extension steel bars 4. The vertical extension steel bars 3 are vertically arranged on the upper or lower surface of the longitudinal vibrating steel bars 1 and the transverse vibrating steel bars 2, and the horizontal extension steel bars 4 are horizontally arranged on both sides of the longitudinal vibrating steel bars 1 and the transverse vibrating steel bars 2. The provision of the vertical extension steel bars 3 and the horizontal extension steel bars 4 expands the vibration area, making the concrete vibration more uniform, and also facilitates the discharge of gas inside the concrete.

[0038] In another technical solution, the longitudinal vibrating steel bars 1 of the upper layer are staggered with the longitudinal vibrating steel bars 1 of the lower layer, the transverse vibrating steel bars 2 of the upper layer are staggered with the transverse vibrating steel bars 2 of the lower layer, the vertical extension steel bars 3 of the upper layer extend downward to the plane position of the longitudinal vibrating steel bars 1 of the lower layer, and the vertical extension steel bars 3 of the lower layer extend upward to the plane position of the longitudinal vibrating steel bars 1 of the upper layer. When pouring concrete, the concrete is poured in layers, each layer is poured with a thickness of 50 cm, and each layer of concrete is poured to the middle of the upper and lower layers of vibrating steel mesh. The concrete of the upper layer is poured before the lower layer of concrete begins to set. When pouring the concrete of the upper layer, the vibrating steel mesh at the position of the concrete layer being poured is vibrated, and the vibrating steel mesh at the position of the next concrete layer is vibrated to achieve secondary vibration of the concrete layer below the poured concrete layer.

[0039] In another technical solution, the vibration transmission element includes a sleeved steel tube 5 and an eccentric flexible shaft. The lower end of the sleeved steel tube 5 is connected to the vertically extending steel bar 3. The eccentric flexible shaft is sleeved in the sleeved steel tube 5 and connected to the vibrating motor. The vibrating motor rotates, driving the eccentric flexible shaft to rotate. The eccentric flexible shaft acts on the sleeved steel tube 5, generating vibration.

[0040] In another technical solution, the sleeved steel pipe 5 is composed of multiple sections of assembled pipes. The spliced composition of the sleeved steel pipe 5 makes it more flexible and convenient to use.

[0041] In another technical solution, a self-locking device is provided at the bottom of the sleeved steel pipe 5, which is detachably fixedly connected to the longitudinal vibrating steel bar 1. The self-locking device connects the sleeved steel pipe 5 to the vertical extension steel bar 3, thereby transmitting the vibration of the sleeved steel pipe 5 to the vertical extension steel bar 3.

[0042] In another technical solution, the self-locking device includes:

[0043] At least two groups of clamping structures, the clamping structures are arranged along the length direction of the sleeved steel pipe 5, and the clamping structures include at least three clamping wheels 6 and a connecting rod 7. The clamping wheels 6 are annularly arranged inside the sleeved steel pipe 5 to define a clamping space. The upper end of the connecting rod 7 is hinged to the inner wall of the sleeve tube. The clamping wheels 6 are provided with an eccentric position above one side of the sleeve tube wall. The lower end of the connecting rod 7 is hinged to the clamping wheels 6 through the hinge hole.

[0044] A torsion spring is provided at the hinged joint between the connecting rod 7 and the inner wall of the sleeve to open the connecting rod 7 relative to the inner wall of the sleeve.

[0045] In this technical solution, the torsion spring propels the clamping wheel 6 open so that it contacts the vertical extension bar 3. During use, the vertical extension bar 3 is inserted into the clamping space, and the sleeve steel pipe 5 remains vertical. Under the action of the sleeve steel pipe 5's own weight, the clamping wheel 6 rotates upward to clamp the vertical extension bar 3. When the sleeve steel pipe 5 is lifted upward, the clamping wheel 6 rotates downward to release the vertical extension bar 3, making it easier to remove the sleeve steel pipe 5.

[0046] In another technical solution, a connecting hole is provided at the lower end of the sleeve steel pipe 5, and the upper end of the connecting rod 7 is hinged at the connecting hole and passes through the connecting hole. An extrusion cylinder 8 is sleeved on the outer side of the lower end of the sleeve steel pipe 5, and an annular ridge is provided at the lower end of the sleeve steel pipe 5 to confine the extrusion cylinder 8 between the annular ridge and the connecting hole. A wire rope is connected to the extrusion cylinder 8. When the wire rope is pulled upward, the upper end of the extrusion cylinder 8 squeezes the connecting rod 7 to rotate the lower end of the connecting rod 7 toward the inner wall of the sleeve steel pipe 5, thereby increasing the clamping space to facilitate the insertion of the vertically extended steel bar 3 into the clamping space. In this technical solution, the extrusion cylinder 8 is pulled upward along the sleeve steel pipe 5 by a wire rope, and the connecting rod 7 is squeezed, so that the clamping space surrounded by the clamping wheel 6 is expanded to facilitate the insertion of the vertical extension steel bar 3 into the clamping space; after the wire rope is released, the extrusion cylinder 8 slides downward, and the connecting rod 7 rotates under the action of the torsion spring to reduce the clamping space, thereby clamping the vertical extension steel bar 3. Before pouring concrete, the lower end of the sleeve steel pipe 5 is aligned with the vertical extension steel bar 3, and the wire rope is pulled to open the clamping space, and the vertical extension steel bar 3 is inserted into the clamping space. The wire rope is released, and the clamping space is reduced. The clamping wheel 6 clamps the vertical extension steel bar 3. Under the action of the gravity of the sleeve steel pipe 5 itself, the clamping wheel 6 firmly clamps and fixes the vertical extension steel bar 3; after pouring is completed, the sleeve steel pipe 5 is lifted upward to achieve the loosening of the clamping structure and the vertical extension steel bar 3. When pouring the 13-meter-high, 1.6-meter-thick foundation pit sidewall, after laying the concrete structure reinforcement and the inner and outer formwork, the sleeved steel pipe 5 is extended downward, and the lower end of the sleeved steel pipe 5 is aligned with the vertical extension steel bar 3. The extrusion cylinder 8 is pulled to increase the clamping space to facilitate the insertion of the vertical extension steel bar 3 into the clamping space. The rope is released, and the clamping wheel 6 clamps the vertical extension steel bar 3 and, under the action of the gravity of the sleeved steel pipe 5, it is clamped and fixed to the vertical extension steel bar 3. Concrete can then be poured into the layer where the vibrating steel mesh connected to the sleeved steel pipe 5 is located. The vibrating motor can be started to vibrate the concrete. After the concrete pouring of this layer is completed, the sleeved steel pipe 5 is lifted and connected to the vertical extension steel bar 3 of the upper layer. The above operation is repeated until the pouring is completed.

[0047] In another technical solution, the outer periphery of the clamping wheel is provided with anti-slip grooves.

[0048] In another technical solution, the diameter of the upper clamping wheel 6 is larger than the diameter of the lower clamping wheel 6 .

[0049] In another technical solution, the top of the sleeved steel pipe 5 is a sealed structure with a vacuum port on the top sidewall. This port is connected to a vacuum pump via a pipe. A vibrating motor drives the eccentric flexible shaft to rotate, which acts on the sleeved steel pipe 5 to vibrate the vibrating steel mesh, thereby vibrating the concrete. Simultaneously, the vacuum pump is activated to provide a vacuum environment for the sleeved steel pipe 5. Gas in the concrete layer enters the sleeved steel pipe 5 along the vibrating steel mesh, thereby discharging the gas from the concrete layer.

[0050] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A device for improving the density and vibration quality of large-volume concrete pouring, characterized in that: include: A vibrating steel mesh comprising longitudinal vibrating steel bars and transverse vibrating steel bars, wherein the longitudinal vibrating steel bars are arranged between the gaps between the structural steel bars of the concrete structure, one end of the longitudinal vibrating steel bars being connected to the inner formwork via a fixing sleeve, and the other end being connected to the outer formwork via a fixing sleeve; and the transverse vibrating steel bars being arranged between the gaps between the structural steel bars of the concrete structure, and the transverse vibrating steel bars being connected to the longitudinal vibrating steel bars; a vibrating motor connected to the vibrating steel mesh via a vibration transmission member to transmit vibration to the vibrating steel mesh; The longitudinal vibrating steel bars and the transverse vibrating steel bars are both provided with vertical extension steel bars and horizontal extension steel bars, the vertical extension steel bars are vertically provided on the upper surface or the lower surface of the longitudinal vibrating steel bars and the transverse vibrating steel bars, and the horizontal extension steel bars are horizontally provided on both sides of the longitudinal vibrating steel bars and the transverse vibrating steel bars; The vibration transmission member includes a sleeve steel pipe and an eccentric flexible shaft, the lower end of the sleeve steel pipe is connected to the vertical extension steel bar, the eccentric flexible shaft is sleeved in the sleeve steel pipe, and the eccentric flexible shaft is connected to the vibrating motor; A self-locking device is provided at the bottom of the sleeved steel pipe, and the self-locking device is detachably fixedly connected to the longitudinal vibrating steel bar; The self-locking device comprises: At least two groups of clamping structures, the clamping structures are arranged along the length direction of the sleeved steel pipe, the clamping structures include at least three clamping wheels and a connecting rod, the clamping wheels are annularly arranged inside the sleeved steel pipe to define a clamping space, the upper end of the connecting rod is hinged to the inner wall of the sleeved steel pipe, the clamping wheels are provided with a hinge hole at an eccentric position above one side of the sleeved pipe wall, and the lower end of the connecting rod is hinged to the clamping wheel through the hinge hole; A torsion spring is provided at a hinged position between the connecting rod and the inner wall of the sleeve tube to open the connecting rod relative to the inner wall of the sleeve tube.

2. The device for improving the density and vibration quality of mass concrete pouring according to claim 1, characterized in that: The fixed sleeve includes a fixed plate and a sleeve tube, the fixed plate is fixedly connected to the template, the sleeve tube is vertically fixed on the fixed plate, and the longitudinal vibrating steel bar is fixedly connected to the sleeve tube.

3. The device for improving the density and vibration quality of mass concrete pouring according to claim 2, characterized in that: A buffer pad is provided between the fixing plate and the sleeve.

4. The device for improving the density and vibration quality of mass concrete pouring according to claim 1, characterized in that: The sleeved steel pipe is formed by splicing and assembling multiple sections of assembly pipes.

5. The device for improving the density and vibration quality of mass concrete pouring according to claim 1, characterized in that: The outer periphery of the clamping wheel is provided with anti-skid grooves.

6. The device for improving the density and vibration quality of mass concrete pouring according to claim 1, characterized in that: The diameter of the upper clamping wheel is larger than the diameter of the lower clamping wheel.

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